diff --git a/data/nearstars.stc b/data/nearstars.stc index 30bf4781..dd47660a 100644 --- a/data/nearstars.stc +++ b/data/nearstars.stc @@ -1,40 +1,37 @@ # Nearby stars and star orbits out to 25 light years, supplementary # to Celestia's stars.dat. -# Data are mainly derived from the RECONS survey tabulation at -# http://www.chara.gsu.edu/RECONS/TOP100.posted.htm. In particular, the -# distances given are derived from RECONS's weighted average parallaxes, -# rather than pure Hipparcos data. Additional definitions are provided -# for some stars within 25 light years which are beyond the limit of RECONS -# tabulation: these are non-Hipparcos stars, multiple stars, and stars -# with other known properties not present in stars.dat. +# Because the RECONS survey tabulation has not been updated since 2010, +# the data mostly comes from the SIMBAD database, with most parallaxes +# coming from Gaia DR2. Gaia DR2 does not provide parallaxes for the brightest +# stars, so for those the Hipparcos parallaxes have been used. In some cases +# where Gaia DR2 parallaxes exist for one of the component stars, that has been +# used; if two or more components have them, the average of the derived distances +# have been used. -# Orbits are taken from Staffan Söderhjelm's "Visual binary orbits and -# masses post Hipparcos" A&A 1999; 34: 121-40 -# (http://adsabs.harvard.edu/abs/1999A&A...341..121S), unless newer data -# have been found. If orbits don't appear in Söderhjelm, they have been -# taken from the Sixth Catalog of Orbits of Visual Binary Stars -# (http://ad.usno.navy.mil/wds/orb6.html) and the Ninth Catalogue of -# Spectroscopic Binary Orbits (http://sb9.astro.ulb.ac.be). Other sources -# appear as comments for individual star systems. +# Most brown dwarfs in this file do not have Gaia parallaxes, in which case the +# parallax comes from Martin et al. (2018), ApJ 867 (2), 109 +# "Y Dwarf Trigonometric Parallaxes from the Spitzer Space Telescope" +# https://arxiv.org/abs/1809.06479 +# Other sources are appear as comments for individual star systems. -# For binary orbits, the direction of an orbit's node on the plane of the +# Because the magnitude system breaks down for extremely dim stars (such as late +# T or Y dwarfs), they have been given an arbitrary but extremely low AbsMag +# value of 40, and their radii have also been set to a value around ~1 Jupiter +# radius, if their radii are not known. + +# Orbits are taken from the Sixth Catalog of Orbits of Visual Binary Stars +# (http://ad.usno.navy.mil/wds/orb6.html), with other sources in the comments +# below. + +# For binary orbits, the direction of an orbit's node on the plane of the # sky is often unknown - the orbits given below will appear correct when -# viewed from Earth, but the true orbit may be tilted either towards -# or away from the Earth. +# viewed from Earth, but the true orbit may be tilted either towards or away from +# the Earth. # For a few orbits the nature of the node is known - these are # marked with the phrase "fully specified orientation". -# Barycenter positions are based on mass estimates from Söderhjelm or RECONS: -# the figures used are added as comments below. - -# Celestia's estimate of star radius is poor for cool stars. Many -# radii are corrected by the measured data in charm2.stc. To avoid -# the appearance of unphysically small red dwarf stars in this file, -# approximate radii for spectral type have been added for nearby -# red dwarfs not covered by Charm2. Data are taken from Table 1 in -# Kaltenegger and Traub (2009) Transits of Earth-like planets. -# ApJ 698:519-27. -# (iopscience.iop.org/0004-637X/698/1/519/pdf/0004-637X_698_1_519.pdf) +# Barycenter positions are based on mass estimates from the papers themselves, +# or if lacking, RECONS. The values used are listed below. Barycenter "Solar System Barycenter:SSB" { @@ -50,9 +47,7 @@ Barycenter "Solar System Barycenter:SSB" SpectralType "G2V" AbsMag 4.83 - Temperature 5780 - BoloCorrection -0.08 - + UniformRotation { Period 609.12 # 25.38 days @@ -64,128 +59,162 @@ Barycenter "Solar System Barycenter:SSB" 70890 # Proxima Cen { - RA 217.429167 - Dec -62.679444 - Distance 4.242 - SpectralType "M5.0V" - AppMag 11.05 + RA 217.42893801 + Dec -62.67949189 + Distance 4.2441 # 768.5004 +/- 0.2030 mas + SpectralType "M5.5Ve" + AppMag 11.09 } -Barycenter "Rigil Kentaurus:Toliman:ALF Cen:Gliese 559" +# Distance from the same source as orbits +Barycenter "Rigel Kentaurus:Toliman:ALF Cen:Gliese 559" { - RA 219.900833 - Dec -60.835556 - Distance 4.365 + RA 219.8993053 # mass ratio 1.133:0.972 + Dec -60.8356249 + Distance 4.3897 # 743 +/- 1.3 mas } -# Pourbaix et al. (2002) Constraining the difference in -# convective blueshift between the components of alpha Centauri -# with precise radial velocities -# http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2002A%2526A...386..280PFUL - 71683 # ALF Cen A { OrbitBarycenter "ALF Cen" SpectralType "G2V" AppMag 0.01 - EllipticalOrbit { # fully specified orientation + EllipticalOrbit { # fully specified orientation Period 79.91 - SemiMajorAxis 10.77 # mass ratio 1.105:0.934 - Eccentricity 0.5179 - Inclination 82.45 - AscendingNode 231.72 - ArgOfPericenter 279.60 - MeanAnomaly 200.16 + SemiMajorAxis 10.68 # mass ratio 1.133:0.972 + Eccentricity 0.52 + Inclination 82.98 + AscendingNode 67.55 + ArgOfPericenter 4.42 + MeanAnomaly 199.75 } } -71681 # ALF cen B +71681 # ALF Cen B { OrbitBarycenter "ALF Cen" - SpectralType "K0V" - AppMag 1.34 + SpectralType "K1V" + AppMag 1.33 - EllipticalOrbit { # fully specified orientation + EllipticalOrbit { # fully specified orientation Period 79.91 - SemiMajorAxis 12.75 # mass ratio 1.105:0.934 - Eccentricity 0.5179 - Inclination 82.45 - AscendingNode 231.72 - ArgOfPericenter 99.60 - MeanAnomaly 200.16 - } + SemiMajorAxis 12.79 # mass ratio 1.133:0.972 + Eccentricity 0.52 + Inclination 82.98 + AscendingNode 67.55 + ArgOfPericenter 184.42 + MeanAnomaly 199.75 + } } 87937 # Barnard's Star { - RA 269.452083 - Dec 4.693333 - Distance 5.979 - SpectralType "M3.5V" - AppMag 9.57 + RA 269.45208250 + Dec 4.69336427 + Distance 5.9577 # 547.4506 +/- 0.2899 mas + SpectralType "M4V" + AppMag 9.511 } -# KL Luhman. Discovery of a Binary Brown Dwarf at 2 Parsecs from -# the Sun. ApJ letters in press. http://arxiv.org/abs/1303.2401 -"WISE 1049-5319 A:WISE J104915.57-531906.1 A" +# Lazorenko & Sahlmann (2018), A&A 618, A111 +# "Updated astrometry and masses of the LUH 16 brown dwarf binary" +# https://arxiv.org/abs/1808.07835 +Barycenter "Luhman 16:WISE 1049-5319:WISE J104915.57-531906.1" { - RA 162.315000 - Dec -53.318333 - Distance 6.58 - SpectralType "L8" - AbsMag 23 # for approximate radius in Celestia + RA 162.328812 + Dec -53.319467 + Distance 6.5029 # 501.557 +/- 0.082 mas } -"WISE 1049-5319 B:WISE J104915.57-531906.1 B" +"Luhman 16 A:WISE 1049-5319 A:WISE J104915.57-531906.1 A" { - RA 162.315700 # separation 1.5" - Dec -53.318333 - Distance 6.58 - SpectralType "L9" # "L/T junction" - AbsMag 24 # for approximate radius in Celestia + OrbitBarycenter "Luhman 16" + SpectralType "L7.5" + AbsMag 23 # for approximate radius in Celestia + + EllipticalOrbit { # fully specified orientation + Period 27.54 + SemiMajorAxis 1.64 # mass ratio 33.51:28.55J + Eccentricity 0.34 + Inclination 64.67 + AscendingNode 295.52 + ArgOfPericenter 121.83 + MeanAnomaly 127.58 + } } +"Luhman 16 B:WISE 1049-5319 B:WISE J104915.57-531906.1 B" +{ + OrbitBarycenter "Luhman 16" + SpectralType "T0.5" + AbsMag 24 # for approximate radius in Celestia + + EllipticalOrbit { # fully specified orientation + Period 27.54 + SemiMajorAxis 1.92 # mass ratio 33.51:28.55J + Eccentricity 0.34 + Inclination 64.67 + AscendingNode 295.52 + ArgOfPericenter 301.83 + MeanAnomaly 127.58 + } +} + +"WISE 0855−0714:WISE J085510.83-071442.5" +{ + RA 133.795125 + Dec -7.2451389 + Distance 7.264 # 449 +/- 8 mas + SpectralType "Y2" + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +# Parallax from Weinberger, et al. (2016), AJ 152 (1), 24 +# "Trigonometric Parallaxes and Proper Motions of 134 Southern Late M, L, +# and T Dwarfs from the Carnegie Astrometric Planet Search Program" +# http://iopscience.iop.org/article/10.3847/0004-6256/152/1/24 "CN Leo:Gliese 406:Wolf 359" { - RA 164.121783 - Dec 7.014722 - Distance 7.782 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 13.53 + RA 164.1201092 + Dec 7.014540 + Distance 7.8948 # 413.13 +/- 1.27 mas + SpectralType "M6V" + AppMag 13.507 } 54035 # Lalande 21185 { - RA 165.834167 - Dec 35.970000 - Distance 8.294 - SpectralType "M2.0V" - AppMag 7.47 + RA 165.83414166 + Dec 35.96988004 + Distance 8.3067 # 392.64 +/- 0.67 mas + SpectralType "M2V" + AppMag 7.520 } +# Distance from same source as orbits Barycenter 32349 "Sirius:Alhabor:ALF CMa:9 CMa:Gliese 244:ADS 5423" { - RA 101.287083 - Dec -16.716111 - Distance 8.583 + RA 101.28715533 + Dec -16.71611586 + Distance 8.608 # 378.9 +/- 1.4 mas } "Sirius A:Alhabor A:ALF CMa A:9 CMa A:Gliese 244 A:ADS 5423 A" { OrbitBarycenter "Sirius" SpectralType "A1V" - AppMag -1.43 + AppMag -1.46 EllipticalOrbit { # fully specified orientation - Period 50.09 - SemiMajorAxis 6.73 # mass ratio 1.99:1.03 - Eccentricity 0.5923 - Inclination 97.51 - AscendingNode 161.33 - ArgOfPericenter 4.56 - MeanAnomaly 40.89 + Period 50.13 + SemiMajorAxis 9.13 # mass ratio 2.063:1.018 + Eccentricity 0.59 + Inclination 97.01 + AscendingNode 161.67 + ArgOfPericenter 5.90 + MeanAnomaly 38.99 } } @@ -196,174 +225,163 @@ Barycenter 32349 "Sirius:Alhabor:ALF CMa:9 CMa:Gliese 244:ADS 5423" AppMag 8.44 EllipticalOrbit { # fully specified orientation - Period 50.09 - SemiMajorAxis 13.00 # mass ratio 1.99:1.03 - Eccentricity 0.592 - Inclination 97.51 - AscendingNode 161.33 - ArgOfPericenter 184.56 - MeanAnomaly 40.89 + Period 50.09 + SemiMajorAxis 10.65 # mass ratio 2.063:1.018 + Eccentricity 0.59 + Inclination 97.01 + AscendingNode 161.67 + ArgOfPericenter 185.90 + MeanAnomaly 38.99 } } +# Distance and radii from same source as orbit +# Rotation periods from Barnes et al. (2017), MNRAS 471 (1), 811 +# "Surprisingly different star-spot distributions on the near equal-mass +# equal-rotation-rate stars in the M dwarf binary GJ 65 AB" +# https://arxiv.org/abs/1706.03979 Barycenter "Gliese 65:Luyten 726-8" { - RA 24.755529 - Dec -17.950278 - Distance 8.728 + RA 24.75626394 # mass ratio 0.1225:0.1195 + Dec -17.950491 + Distance 8.791 # 373.70 +/- 2.70 mas } "BL Cet:Gliese 65 A:Luyten 726-8 A" { - OrbitBarycenter "Gliese 65" + OrbitBarycenter "Gliese 65" SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 12.61 + AppMag 12.7 + Radius 114790 EllipticalOrbit { - Period 26.52 - SemiMajorAxis 2.61 # mass ratio 0.1:0.1 - Eccentricity 0.62 - Inclination 101.3 - AscendingNode 159.5 - ArgOfPericenter 39.7 - MeanAnomaly 21.3 + Period 26.28 + SemiMajorAxis 2.72 # mass ratio 0.1225:0.1195 + Eccentricity 0.62 + Inclination 91.85 + AscendingNode 157.40 + ArgOfPericenter 40.22 + MeanAnomaly 21.93 } + + RotationPeriod 5.76 } "UV Cet:Gliese 65 B:Luyten 726-8 B" { OrbitBarycenter "Gliese 65" - SpectralType "M6.0V" - Radius 105000 # approx. for class - AppMag 13.06 + SpectralType "M6V" + AppMag 13.2 + Radius 110600 EllipticalOrbit { - Period 26.52 - SemiMajorAxis 2.61 # mass ratio 0.1:0.1 - Eccentricity 0.62 - Inclination 101.3 - AscendingNode 159.5 - ArgOfPericenter 219.7 - MeanAnomaly 21.3 + Period 26.28 + SemiMajorAxis 2.79 # mass ratio 0.1225:0.1195 + Eccentricity 0.62 + Inclination 91.85 + AscendingNode 157.40 + ArgOfPericenter 220.22 + MeanAnomaly 21.93 } -} -# Kirpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 1541-2250:WISE J1541-2250:WISEPA J154151.66-225025.2" -{ - Texture "exo-class4night.*" - RA 235.465417 - Dec -22.840278 - Distance 9.3 - SpectralType "T9.5" # actually Y0 - Temperature 350 - Radius 70000 - AbsMag 50 # extremely low + RotationPeriod 5.52 } 92403 # Ross 154 { - RA 282.455833 - Dec -23.836111 - Distance 9.672 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 10.44 + RA 282.45568250 + Dec -23.83623710 + Distance 9.7035 # 336.1228 +/- 0.0641 mas + SpectralType "M3.5Ve" + AppMag 10.495 } "HH And:Gliese 905:Ross 248" { - RA 355.479875 - Dec 44.177222 - Distance 10.310 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 12.29 + RA 355.47931716 + Dec 44.17745144 + Distance 10.2903 # 316.9558 +/- 0.1260 mas + SpectralType "M5.0V" + AppMag 12.28 } 16537 # Eps Eri { - RA 53.232500 - Dec -9.458333 - Distance 10.480 + RA 53.23268735 + Dec -9.45825866 + Distance 10.489 # 310.94 +/- 0.16 mas SpectralType "K2V" AppMag 3.73 } 114046 # Lacaille 9352 { - RA 346.466667 - Dec -35.853056 - Distance 10.691 - SpectralType "M1.0V" + RA 346.46681439 + Dec -35.85307188 + Distance 10.7211 # 304.2190 +/- 0.0451 mas + SpectralType "M2V" AppMag 7.34 } 57548 # Ross 128 { - RA 176.935000 - Dec 0.804444 - Distance 10.940 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 11.16 + RA 176.93498695 + Dec 0.80455693 + Distance 11.0074 # 296.3073 +/- 0.0699 mas + SpectralType "M4V" + AppMag 11.153 } -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) +# Segransan. et al. (2000), A&A 364, 665 +# "Accurate masses of very low mass stars. III. 16 new or improved masses" +# http://adsabs.harvard.edu/abs/2000A%26A...364..665S Barycenter "Gliese 866:Luyten 789-6" { - RA 339.640833 - Dec -15.300806 - Distance 11.266 + RA 339.6399000 + Dec -15.2999325 + Distance 11.109 # 293.6 +/- 0.9 mas } Barycenter "Gliese 866 A:Luyten 789-6 A" { OrbitBarycenter "Gliese 866" - EllipticalOrbit { - Period 2.2506 - SemiMajorAxis 0.42 # mass ratio 0.106:(0.105+0.095) - Eccentricity 0.437 - Inclination 96.2 - AscendingNode 133.5 - ArgOfPericenter 76.4 - MeanAnomaly 241.7 + EllipticalOrbit { # fully specified orientation + Period 2.2537 + SemiMajorAxis 0.415 # mass ratio (0.1187:0.0930):0.1145 + Eccentricity 0.439 + Inclination 89.43 + AscendingNode 358.27 + ArgOfPericenter 61.70 + MeanAnomaly 243.55 } } "EZ Aqr:Gliese 866 Aa:Luyten 789-6 Aa" { OrbitBarycenter "Gliese 866 A" - SpectralType "M5.0V" - Radius 140000 # approx. for class + SpectralType "M5V" AppMag 13.03 EllipticalOrbit { - Period 0.010 # 3.8dys - SemiMajorAxis 0.013 # to match period and mass ratio 0.105:0.095 - Inclination 96 # guess - to match plane of B - AscendingNode 133 # guess - to match plane of B + Period 0.01037 # 3.786516 d + SemiMajorAxis 0.01244 # to match period and mass ratio 0.1187:0.0930 + Inclination 90 # plane-of-sky inclination 116.5 deg + AscendingNode 2 # guess - to roughly match plane of B } } "Gliese 866 Ab:Luyten 789-6 Ab" { OrbitBarycenter "Gliese 866 A" - SpectralType "M6V" # from apparent magnitude - Radius 105000 # approx. for estimated class + SpectralType "M7V" # from mass AppMag 15.07 EllipticalOrbit { - Period 0.010 # 3.8dys - SemiMajorAxis 0.014 # to match period and mass ratio 0.105:0.095 - Inclination 96 # guess - to match plane of B - AscendingNode 133 # guess - to match plane of B + Period 0.01037 # 3.786516 d + SemiMajorAxis 0.01589 # to match period and mass ratio 0.1187:0.0930 + Inclination 90 # guess - to match plane of B + AscendingNode 2 # guess - to match plane of B ArgOfPericenter 180 } } @@ -371,42 +389,46 @@ Barycenter "Gliese 866 A:Luyten 789-6 A" "Gliese 866 B:Luyten 789-6 B" { OrbitBarycenter "Gliese 866" - SpectralType "M5V" # from apparent magnitude - Radius 140000 # approx. for estimated class + SpectralType "M6V" # from apparent magnitude AppMag 13.27 - EllipticalOrbit { - Period 2.2506 - SemiMajorAxis 0.78 # mass ratio 0.106:(0.105+0.095) - Eccentricity 0.437 - Inclination 96.2 - AscendingNode 133.5 - ArgOfPericenter 256.4 - MeanAnomaly 241.7 + EllipticalOrbit { # fully specified orientation + Period 2.2537 + SemiMajorAxis 0.768 # mass ratio (0.1187:0.0930):0.1145 + Eccentricity 0.439 + Inclination 89.43 + AscendingNode 358.27 + ArgOfPericenter 241.70 + MeanAnomaly 243.55 } } +# physical parameters from Kervella et al. (2008), A&A 488 (2), 667 +# "The radii of the nearby K5V and K7V stars 61 Cygni A & B. CHARA/FLUOR +# interferometry and CESAM2k modeling" +# https://arxiv.org/abs/0806.4049 Barycenter "61 Cyg:Gliese 820:ADS 14636" { - RA 316.714507 # mass ratio 0.7:0.63 - Dec 38.738139 # - Distance 11.401 + RA 316.7273265 # mass ratio 0.690:0.605 + Dec 38.7459723 + Distance 11.402 } 104214 "61 Cyg A:V1803 Cyg:Gliese 820 A:ADS 14636 A" { OrbitBarycenter "61 Cyg" SpectralType "K5V" - AppMag 5.20 + AppMag 5.21 + Radius 462600 EllipticalOrbit { - Period 659 - SemiMajorAxis 40.40 # mass ratio 0.7:0.63 - Eccentricity 0.48 - Inclination 132 - AscendingNode 165 - ArgOfPericenter 195 - MeanAnomaly 165 + Period 678 + SemiMajorAxis 39.64 # mass ratio 0.690:0.605 + Eccentricity 0.49 + Inclination 135 + AscendingNode 166 + ArgOfPericenter 200 + MeanAnomaly 154 } } @@ -415,23 +437,25 @@ Barycenter "61 Cyg:Gliese 820:ADS 14636" OrbitBarycenter "61 Cyg" SpectralType "K7V" AppMag 6.03 + Radius 413900 EllipticalOrbit { - Period 659 - SemiMajorAxis 44.90 # mass ratio 0.7:0.63 - Eccentricity 0.48 - Inclination 132 - AscendingNode 165 - ArgOfPericenter 15 - MeanAnomaly 165 + Period 678 + SemiMajorAxis 45.21 # mass ratio 0.690:0.605 + Eccentricity 0.49 + Inclination 135 + AscendingNode 167 + ArgOfPericenter 20 + MeanAnomaly 155 } } +# Distance from same source as orbit Barycenter 37279 "Procyon:Elgomaisa:ALF CMi:10 CMi:Gliese 280:ADS 6251" { - RA 114.82724 - Dec 5.2275076 - Distance 11.438 + RA 114.82549791 + Dec 5.22498756 + Distance 11.444 # 250.0 +/- 0.7 mas } "Procyon A:Elgomaisa A:ALF CMi A:10 CMi A:Gliese 280 A:ADS 6251 A" @@ -440,14 +464,14 @@ Barycenter 37279 "Procyon:Elgomaisa:ALF CMi:10 CMi:Gliese 280:ADS 6251" SpectralType "F5IV" AppMag 0.37 - EllipticalOrbit { - Period 40.82 - SemiMajorAxis 4.13 # mass ratio 1.57:0.6 - Eccentricity 0.407 - Inclination 42.9 - AscendingNode 27.8 - ArgOfPericenter 88.4 - MeanAnomaly 282.5 + EllipticalOrbit { # fully specified orientation + Period 40.84 + SemiMajorAxis 4.32 # mass ratio 1.478:0.592 + Eccentricity 0.40 + Inclination 42.58 + AscendingNode 25.26 + ArgOfPericenter 90.19 + MeanAnomaly 281.41 } } @@ -455,38 +479,41 @@ Barycenter 37279 "Procyon:Elgomaisa:ALF CMi:10 CMi:Gliese 280:ADS 6251" { OrbitBarycenter "Procyon" SpectralType "DA" - AppMag 10.70 + AppMag 10.7 - EllipticalOrbit { - Period 40.82 - SemiMajorAxis 10.80 # mass ratio 1.57:0.6 - Eccentricity 0.407 - Inclination 42.9 - AscendingNode 27.8 - ArgOfPericenter 268.4 - MeanAnomaly 282.5 + EllipticalOrbit { # fully specified orientation + Period 40.84 + SemiMajorAxis 10.79 # mass ratio 1.478:0.592 + Eccentricity 0.40 + Inclination 42.58 + AscendingNode 25.26 + ArgOfPericenter 270.19 + MeanAnomaly 281.41 } } +# masses from Mann et al. (2015), ApJ 804 (1), 64 +# "How to Constrain Your M Dwarf: Measuring Effective Temperature, +# Bolometric Luminosity, Mass, and Radius" +# http://iopscience.iop.org/article/10.1088/0004-637X/804/1/64/meta Barycenter "Gliese 725:ADS 11632:Struve 2398" { - RA 280.701371 # mass ratio 0.35:0.26 - Dec 59.624455 # - Distance 11.492 + RA 280.6949398 # mass ratio 0.334:0.248 + Dec 59.6288903 + Distance 11.488 } 91768 "Gliese 725 A:ADS 11632 A:Struve 2398 A" { - OrbitBarycenter "Gliese 725" - SpectralType "M3.0V" - Radius 270000 # approx. for class - AppMag 8.90 + OrbitBarycenter "ADS 11632" + SpectralType "M3V" + AppMag 8.91 EllipticalOrbit { - Period 408 - SemiMajorAxis 20.91 # mass ratio 0.35:0.26 - Eccentricity 0.53 - Inclination 112 + Period 408 + SemiMajorAxis 20.83 # mass ratio 0.334:0.248 + Eccentricity 0.53 + Inclination 111.9 AscendingNode 146.1 ArgOfPericenter 243.5 MeanAnomaly 198.5 @@ -495,42 +522,47 @@ Barycenter "Gliese 725:ADS 11632:Struve 2398" 91772 "Gliese 725 B:ADS 11632 B:Struve 2398 B" { - OrbitBarycenter "Gliese 725" + OrbitBarycenter "ADS 11632" SpectralType "M3.5V" - Radius 225000 # approx. for class AppMag 9.69 EllipticalOrbit { - Period 408 - SemiMajorAxis 28.14 # mass ratio 0.35:0.26 - Eccentricity 0.53 - Inclination 112 - AscendingNode 146.1 + Period 408 + SemiMajorAxis 28.06 # mass ratio 0.334:0.248 + Eccentricity 0.53 + Inclination 111.9 + AscendingNode 146.1 ArgOfPericenter 63.5 - MeanAnomaly 198.5 + MeanAnomaly 198.5 } } +# Pinamonti et al. (2018), A&A 617, A104 +# "The HADES RV Programme with HARPS-N at TNG. VIII. GJ15A: a multiple +# wide planetary system sculpted by binary interaction" +# https://arxiv.org/abs/1804.03476 Barycenter 1475 "Gliese 15:ADS 246:Groombridge 34" { - RA 4.595417 - Dec 44.023056 - Distance 11.654 + RA 4.600573040 # mass ratio 0.38:0.15 + Dec 44.02478402 + Distance 11.619 } "GX And:Gliese 15 A:ADS 246 A:Groombridge 34 A" { OrbitBarycenter "Groombridge 34" - SpectralType "M1.5V" - AppMag 8.08 + SpectralType "M2V" + AppMag 8.13 + Radius 264400 EllipticalOrbit { - Period 2600 - SemiMajorAxis 36.1 # mass ratio 0.49:0.16 - Eccentricity 0 - Inclination 67.9 - AscendingNode 308.4 - MeanLongitude 23.0 + Period 1230 + SemiMajorAxis 26.32 # mass ratio 0.38:0.15 + Eccentricity 0.53 + Inclination 172 + AscendingNode 194 + ArgOfPericenter 75 + MeanAnomaly 296 } } @@ -538,55 +570,70 @@ Barycenter 1475 "Gliese 15:ADS 246:Groombridge 34" { OrbitBarycenter "Groombridge 34" SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.06 + AppMag 11.04 + Radius 125200 EllipticalOrbit { - Period 2600 - SemiMajorAxis 110.7 # mass ratio 0.49:0.16 - Eccentricity 0 - Inclination 67.9 - AscendingNode 308.4 - MeanLongitude 203.0 + Period 1230 + SemiMajorAxis 66.68 # mass ratio 0.38:0.15 + Eccentricity 0.53 + Inclination 172 + AscendingNode 194 + ArgOfPericenter 255 + MeanAnomaly 296 } } +"DX Cnc:GJ 1111:Giclas 51-15" +{ + RA 127.45563677 + Dec 26.77600744 + Distance 11.6780 # 279.2901 +/- 0.1345 mas + SpectralType "M6.5V" + AppMag 14.81 +} + Barycenter "EPS Ind:Gliese 845" # orbit of A & B components unknown { - RA 330.841091 # mass ratio 0.77:(0.04+0.03) - Dec -56.780045 - Distance 11.815 + RA 330.87262069 # mass ratio 0.732:(0.0716:0.0669) + Dec -56.7854593 + Distance 11.870 } 108870 "EPS Ind A:Gliese 845 A" { - RA 330.82266 - Dec -56.779804 - Distance 11.815 - SpectralType "K4V" - AppMag 4.68 + RA 330.84022596 + Dec -56.7859825 + Distance 11.8686 # 274.8048 +/- 0.2494 mas + SpectralType "K5V" + AppMag 4.69 } -# McCaughrean, M.J. et al.(2004) "Eps Indi Ba,Bb: The nearest binary -# brown dwarf" A&A 413, 1029. -# (http://arxiv.org/PS_cache/astro-ph/pdf/0309/0309256.pdf) +# Dieterich et al. (2017) "Dynamical Masses of ε Indi B and C: Two Massive +# Brown Dwarfs at the Edge of the Stellar–substellar Boundary" +# https://arxiv.org/abs/1807.09880 Barycenter "EPS Ind B:CI Ind:Gliese 845 B" { - RA 331.043833 + RA 331.0438333 Dec -56.782694 - Distance 11.815 + Distance 11.780 # 276.88 +/- 0.81 mas } "EPS Ind Ba:CI Ind A:Gliese 845 Ba" { OrbitBarycenter "EPS Ind B" - SpectralType "T1V" + SpectralType "T1.5V" Temperature 1280 - AbsMag 34.9 # for correct radius in Celestia + AbsMag 26 # for correct radius in Celestia - EllipticalOrbit { - Period 15.5 # approximate orbit - SemiMajorAxis 0.99 # mass ratio 47:28J + EllipticalOrbit { # fully specified orientation + Period 11.41 + SemiMajorAxis 1.26 # mass ratio 75.0:70.1J + Eccentricity 0.47 + Inclination 77.95 + AscendingNode 138.03 + ArgOfPericenter 87.11 + MeanAnomaly 49.82 } } @@ -595,207 +642,193 @@ Barycenter "EPS Ind B:CI Ind:Gliese 845 B" OrbitBarycenter "EPS Ind B" SpectralType "T6V" Temperature 850 - AbsMag 51.4 # for correct radius in Celestia + AbsMag 33.5 # for correct radius in Celestia - EllipticalOrbit { - Period 15.5 # approximate orbit - SemiMajorAxis 1.66 # mass ratio 47:28J - ArgOfPericenter 180 + EllipticalOrbit { # fully specified orientation + Period 11.41 + SemiMajorAxis 1.35 # mass ratio 75.0:70.1J + Eccentricity 0.47 + Inclination 77.95 + AscendingNode 138.03 + ArgOfPericenter 267.11 + MeanAnomaly 49.82 } } -"DX Cnc:GJ 1111:Giclas 51-15" -{ - RA 127.456125 - Dec 26.775611 - Distance 11.826 - SpectralType "M6.0V" - Radius 105000 # approx. for class - AppMag 14.90 -} - 8102 # Tau Cet { - RA 26.017083 - Dec -15.937500 - Distance 11.905 - SpectralType "G8.5V" - AppMag 3.49 + RA 26.01701426 + Dec -15.93747960 + Distance 11.905 # 273.96 +/- 0.17 mas + SpectralType "G8V" + AppMag 3.50 } -"GJ 1061:Luyten 372-58:RECONS 1" +"GJ 1061:Luyten 372-58" { - RA 53.998750 - Dec -44.512500 - Distance 11.991 - SpectralType "M5.0V" - Radius 140000 # approx. for class - AppMag 13.09 + RA 53.99874864 + Dec -44.51270146 + Distance 11.9803 # 272.2446 +/- 0.0661 mas + SpectralType "M5.5V" + AppMag 13.03 } -5643 # Luyten 725-032 +5643 # YZ Cet { - RA 18.127500 - Dec -16.999167 - Distance 12.121 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.10 + RA 18.12765323 + Dec -16.99898925 + Distance 12.1084 # 269.3628 +/- 0.0785 mas + SpectralType "M4.0Ve" + AppMag 12.074 } 36208 # Luyten's Star { - RA 111.852083 - Dec 5.225833 - Distance 12.251 + RA 111.85208229 + Dec 5.22578699 + Distance 12.402 # 262.98 +/- 1.39 mas SpectralType "M3.5V" - Radius 225000 # approx for class - AppMag 9.85 + AppMag 9.872 } -# Biller B.A. et al.(2006) "Discovery of the Closest Brown Dwarf to -# the Sun? A Methane Rich Brown Dwarf Around the Nearby M8.5 Star -# SCR 1845" -# (http://xxx.uni-augsburg.de/PS_cache/astro-ph/pdf/0601/0601441.pdf) -Barycenter "SCR 1845-6357:SCR J1845-6357:2MASS 1845-6357:2MASS J18450541-6357475" +"Teegarden's Star:SO0253+1652:SO025300.5+165258" { - RA 281.260833 - Dec -63.964444 - Distance 12.569 -} - -"SCR 1845-6357 A:SCR J1845-6357 A:2MASS 1845-6357 A:2MASS J18450541-6357475 A" -{ - OrbitBarycenter "SCR 1845-6357" - SpectralType "M8.5V" - Radius 66000 # approx. for class - AppMag 17.40 - - EllipticalOrbit { - Period 23.5 # estimate - SemiMajorAxis 1.6 # estimated mass ratio 0.07:0.045 - ArgOfPericenter 180 - } -} - -"SCR 1845-6357 B:SCR J1845-6357 B:2MASS 1845-6357 B:2MASS J18450541-6357475 B" -{ - OrbitBarycenter "SCR 1845-6357" - SpectralType "T6V" - Temperature 950 - Radius 62500 - AbsMag 50 # faintest visible in Celestia - - EllipticalOrbit { - Period 23.5 # estimate - SemiMajorAxis 2.4 # estimated mass ratio 0.07:0.045 - } -} - -"Teegarden's Star:2MASS 0253+1652:2MASS J02530084+1652532:SO 0253+1652:SO J025300.5+165258" -{ - RA 43.253613 - Dec 16.881389 - Distance 12.573 - SpectralType "M6.5V" - Radius 94000 # approx. for class - AppMag 15.14 + RA 43.25371387 + Dec 16.88128947 + Distance 12.4957 # 261.0147 +/- 0.2690 mas + SpectralType "M7.0V" + AppMag 15.40 } 24186 # Kapteyn's Star { - RA 77.919167 - Dec -45.018333 - Distance 12.757 - SpectralType "M2.0VI" - AppMag 8.85 + RA 77.91912216 + Dec -45.01843165 + Distance 12.8294 # 254.2263 +/- 0.0263 mas + SpectralType "M1VI" + AppMag 8.853 } 105090 # Lacaille 8760 { - RA 319.313750 - Dec -38.867500 - Distance 12.869 - SpectralType "K9.0V" - AppMag 6.67 + RA 319.31362024 + Dec -38.86736390 + Distance 12.9515 # 251.8295 +/- 0.0559 mas + SpectralType "M1V" + AppMag 6.68 } -"DENIS 1048-3956:DENIS-P J104814.9-395604:RECONS 2:2MASS 1048-3956:2MASS J10481463-3956062" +# used Gaia DR2 parallax for A +# parameters from Vigan et al. (2012), A&A 540, A131 +# "High-contrast spectroscopy of SCR J1845-6357 B" +# https://www.aanda.org/articles/aa/abs/2012/04/aa18426-11/aa18426-11.html +Barycenter "SCR 1845-6357" { - Texture "browndwarf.*" - RA 162.061250 - Dec -39.935000 - Distance 13.124 + RA 281.27187786 + Dec -63.96318293 + Distance 13.0505 # 249.9187 +/- 0.1551 mas +} + +"SCR 1845-6357 A" +{ + OrbitBarycenter "SCR 1845-6357" SpectralType "M8.5V" - Radius 66000 # approx. for class - AppMag 17.39 + AppMag 17.40 + + EllipticalOrbit { + Period 24 # estimate + SemiMajorAxis 1.6 # estimated mass ratio 0.07:0.045 + ArgOfPericenter 180 + } +} + +"SCR 1845-6357 B" +{ + OrbitBarycenter "SCR 1845-6357" + SpectralType "T6V" + AbsMag 33.5 # for approximate radius in Celestia + + EllipticalOrbit { + Period 24 # estimate + SemiMajorAxis 2.4 # estimated mass ratio 0.07:0.045 + } } Barycenter 110893 "Gliese 860:ADS 15972:Kruger 60" { - RA 336.997917 - Dec 57.695833 - Distance 13.149 + RA 336.9985152 # mass ratio 0.30:0.17 + Dec 57.69579262 # only used parallax of A + Distance 13.0780 # 249.3926 +/- 0.1653 mas } "Gliese 860 A:ADS 15972 A:Kruger 60 A" { OrbitBarycenter "Kruger 60" - SpectralType "M3.0V" - Radius 270000 # approx. for class - AppMag 9.79 + SpectralType "M3V" + AppMag 9.93 EllipticalOrbit { - Period 44.64 - SemiMajorAxis 3.53 # mass ratio 0.30:0.17 + Period 44.67 + SemiMajorAxis 3.46 # mass ratio 0.30:0.17 Eccentricity 0.41 - Inclination 34.04 - AscendingNode 120.09 - ArgOfPericenter 269.84 - MeanAnomaly 239.52 + Inclination 37.04 + AscendingNode 126.59 + ArgOfPericenter 264.09 + MeanAnomaly 240.00 } } -"DO Cep:Gliese 860 B:ADS 15972 B:Kruger 60 B" +2000923991 "DO Cep:Gliese 860 B:ADS 15972 B:Kruger 60 B" { OrbitBarycenter "Kruger 60" - SpectralType "M4.0V" - Radius 180000 # approx. for class + SpectralType "M4V" AppMag 11.41 EllipticalOrbit { - Period 44.64 - SemiMajorAxis 6.23 # mass ratio 0.30:0.17 - Eccentricity 0.41 - Inclination 34.04 - AscendingNode 120.09 - ArgOfPericenter 89.84 - MeanAnomaly 239.52 + Period 44.67 + SemiMajorAxis 6.10 # mass ratio 0.30:0.17 + Eccentricity 0.41 + Inclination 37.04 + AscendingNode 126.59 + ArgOfPericenter 84.09 + MeanAnomaly 240.00 } } +"DENIS 1048-3956:DENIS J104814.6-395606:RECONS 2" +{ + RA 162.06072261 + Dec -39.93523423 + Distance 13.1932 # 247.2157 +/- 0.1236 mas + SpectralType "M9V" + AppMag 17.532 +} + +# masses and parallaxes from Benedict et al. (2016), AJ 152 (5), 141 +# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence +# M Dwarfs" +# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta Barycenter 30920 "Gliese 234:Ross 614" { - RA 97.347500 - Dec -2.813889 - Distance 13.343 + RA 97.34746466 + Dec -2.81355664 + Distance 13.4239 # 242.9659 +/- 0.8833 mas } "V577 Mon:Gliese 234 A:Ross 614 A" { OrbitBarycenter "Ross 614" SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 11.18 + AppMag 11.15 - EllipticalOrbit { - Period 16.5 - SemiMajorAxis 1.31 # mass ratio 0.22:0.09 + EllipticalOrbit { # fully specified orientation + Period 16.63 + SemiMajorAxis 1.48 # mass ratio 0.223:0.109 Eccentricity 0.38 - Inclination 54.18 - AscendingNode 71.17 - ArgOfPericenter 130.67 - MeanAnomaly 0.00 + Inclination 93.87 + AscendingNode 322.71 + ArgOfPericenter 347.29 + MeanAnomaly 15.85 } } @@ -803,629 +836,692 @@ Barycenter 30920 "Gliese 234:Ross 614" { OrbitBarycenter "Ross 614" SpectralType "M7V" - Radius 83500 # approx. for class - AppMag 14.26 + AppMag 14.23 - EllipticalOrbit { - Period 16.5 - SemiMajorAxis 3.19 # mass ratio 0.22:0.09 + EllipticalOrbit { # fully specified orientation + Period 16.63 + SemiMajorAxis 3.02 # mass ratio 0.223:0.109 Eccentricity 0.38 - Inclination 54.18 - AscendingNode 71.17 - ArgOfPericenter 310.67 - MeanAnomaly 0.00 + Inclination 93.87 + AscendingNode 322.71 + ArgOfPericenter 167.29 + MeanAnomaly 15.85 } } -# The discovery of a very cool, very nearby brown dwarf -# in the Galactic plane. Lucas et al. http://arxiv.org/abs/1004.0317v2 -"UGPS 0722-05:UGPS J0722-05:UGPS J072227.51-054031.2" +# low-quality parallax from Theissen, C. A. (2018), ApJ 862 (2), 173 +# "Parallaxes of Cool Objects with WISE: Filling in for Gaia" +# http://iopscience.iop.org/article/10.3847/1538-4357/aaccfa/meta +"UGPS 0722−0540:UGPS J072227.51-054031.2" { - Texture "exo-class4night.*" - RA 110.613750 - Dec -5.675000 - Distance 13.367 - SpectralType "T9" - Temperature 540 - Radius 70000 # approx. - AbsMag 50 # extremely low -} - -80824 # Wolf 1061 -{ - RA 247.575417 - Dec -12.662500 - Distance 13.916 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 10.10 -} - -3829 # van Maanen's Star -{ - RA 12.291250 - Dec 5.388611 - Distance 14.017 - SpectralType "DZ7" - AppMag 12.40 -} - -439 # Cordoba 32416 - -{ - RA 1.351667 - Dec -37.357500 - Distance 14.161 - SpectralType "M1.5V" - Radius 324000 # approx. for class - AppMag 8.54 + RA 110.6161250 + Dec -5.6753056 + Distance 13.433 # 242.8 +/- 2.40 mas + SpectralType "T9V" + Temperature 505 + Radius 60000 # approx. + AbsMag 40 # extremely low } +# masses and parallaxes from Benedict et al. (2016), AJ 152 (5), 141 +# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence +# M Dwarfs" +# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta Barycenter "Gliese 473:Wolf 424" { - RA 188.321667 - Dec 9.020833 - Distance 14.312 + RA 188.3223395 + Dec 9.0210534 + Distance 13.850 # 235.5 +/- 2.9 mas } "Gliese 473 A:Wolf 424 A" { OrbitBarycenter "Wolf 424" - SpectralType "M5.0V" - Radius 140000 # approx. for class - AppMag 13.25 + SpectralType "M5.5V" + AppMag 13.18 - EllipticalOrbit { - Period 15.9 - SemiMajorAxis 1.92 # mass ratio 0.14:0.13 - Eccentricity 0.3 - Inclination 28.7 - AscendingNode 359.5 - ArgOfPericenter 81.1 - MeanAnomaly 169.8 + EllipticalOrbit { # fully specified orientation + Period 15.81 + SemiMajorAxis 1.86 # mass ratio 0.124:0.113 + Eccentricity 0.30 + Inclination 29.15 + AscendingNode 357.44 + ArgOfPericenter 80.72 + MeanAnomaly 172.43 } } "FL Vir:Gliese 473 B:Wolf 424 B" { OrbitBarycenter "Wolf 424" - SpectralType "M5.0V" - Radius 140000 # approx. for class - AppMag 13.24 + SpectralType "M5.5V" + AppMag 13.17 - EllipticalOrbit { - Period 15.9 - SemiMajorAxis 2.06 # mass ratio 0.14:0.13 - Eccentricity 0.3 - Inclination 28.7 - AscendingNode 359.5 - ArgOfPericenter 261.1 - MeanAnomaly 169.8 + EllipticalOrbit { # fully specified orientation + Period 15.81 + SemiMajorAxis 2.04 # mass ratio 0.124:0.113 + Eccentricity 0.30 + Inclination 29.15 + AscendingNode 357.44 + ArgOfPericenter 260.72 + MeanAnomaly 172.43 } } +80824 # Wolf 1061 +{ + RA 247.57524250 + Dec -12.66258979 + Distance 14.0458 # 232.2095 +/- 0.0630 mas + SpectralType "M3V" + AppMag 10.072 +} + +3829 # van Maanen's Star +{ + RA 12.29124338 + Dec 5.38860920 + Distance 14.0744 # 231.7375 +/- 0.0380 mas + SpectralType "DZ7.5" + AppMag 12.374 +} + +439 # Gliese 1 +{ + RA 1.35178251 + Dec -37.35736228 + Distance 14.1725 # 230.1331 +/- 0.0600 mas + SpectralType "M2V" + AppMag 8.562 +} + +# parameters and low-quality parallax from Martin et al. (2018) +"WISE 1639-6847:WISE J163940.83-684738.6" +{ + RA 249.921736 + Dec -68.797280 + Distance 14.302 # 228.05 +/- 8.93 mas + SpectralType "Y0Vpec" + Temperature 370 # approx. + Radius 60000 # approx. + AbsMag 40 # extremely low +} + "TZ Ari:Gliese 83.1:Luyten 1159-16" { - RA 30.055000 - Dec 13.052222 - Distance 14.509 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.31 + RA 30.05398414 + Dec 13.05195036 + Distance 14.5843 # 223.6349 +/- 0.1066 mas + SpectralType "M4.5V" + AppMag 12.298 +} + +85523 # Gliese 674 +{ + RA 262.16643984 + Dec -46.89519257 + Distance 14.8387 # 219.8012 +/- 0.0487 mas + SpectralType "M3V" + AppMag 9.407 } 86162 # Gliese 687 { - RA 264.107917 - Dec 68.339167 - Distance 14.794 + RA 264.10791321 + Dec 68.33914004 + Distance 14.8401 # 219.7807 +/- 0.0324 mas SpectralType "M3.0V" - Radius 270000 # approx. for class - AppMag 9.17 + AppMag 9.15 } "GJ 3622:LP 731-58" { - RA 162.052500 - Dec -11.337222 - Distance 14.805 + RA 162.05255937 + Dec -11.33600262 + Distance 14.8851 # 219.1159 +/- 0.1567 mas SpectralType "M6.5V" - Radius 94000 # approx. for class - AppMag 15.73 + AppMag 15.784 } +57367 # Luyten 145-141 +{ + RA 176.42882111 + Dec -64.84151780 + Distance 15.1182 # 215.7373 +/- 0.0324 mas + SpectralType "DQ6" + AppMag 11.513 +} + +113020 # Gliese 687 +{ + RA 343.31971796 + Dec -14.26369539 + Distance 15.2504 # 213.8669 +/- 0.0758 mas + SpectralType "M3.5V" + AppMag 10.192 +} + +# masses from Benedict et al. (2016), AJ 152 (5), 141 +# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence +# M Dwarfs" +# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta Barycenter "GJ 1245" # orbit of A & B components unknown { - RA 298.477317 # mass ratio (0.11+0.07):0.10 - Dec 44.415377 # - Distance 14.812 + RA 298.477317 # mass ratio (0.111:0.076):0.10 + Dec 44.415377 + Distance 15.268 } Barycenter "GJ 1245 A" { - RA 298.475833 - Dec 44.415278 - Distance 14.812 + RA 298.47700882 + Dec 44.41426155 + Distance 15.3029 # 213.1329 +/- 0.5737 mas } - "V1581 Cyg:GJ 1245 Aa" { OrbitBarycenter "GJ 1245 A" SpectralType "M5.5V" - Radius 122000 # approx. for class AppMag 13.46 - EllipticalOrbit { - Period 15.22 - SemiMajorAxis 0.49 # mass ratio 0.11:0.07 - Eccentricity 0.32 - Inclination 20 - AscendingNode 197 - ArgOfPericenter 58 - MeanAnomaly 40 + EllipticalOrbit { # fully specified orientation + Period 16.84 + SemiMajorAxis 1.53 # mass ratio 0.111:0.076 + Eccentricity 0.33 + Inclination 70.45 + AscendingNode 37.06 + ArgOfPericenter 208.50 + MeanAnomaly 2.21 } } "GJ 1245 Ab" { OrbitBarycenter "GJ 1245 A" - SpectralType "M7.5V" # from low luminosity - Radius 80000 # approx. for estimated class + SpectralType "M7.5V" AppMag 16.75 - EllipticalOrbit { - Period 15.22 - SemiMajorAxis 0.78 # mass ratio 0.11:0.07 - Eccentricity 0.32 - Inclination 20 - AscendingNode 197 - ArgOfPericenter 238 - MeanAnomaly 40 + EllipticalOrbit { # fully specified orientation + Period 16.84 + SemiMajorAxis 2.23 # mass ratio 0.111:0.076 + Eccentricity 0.33 + Inclination 70.45 + AscendingNode 37.06 + ArgOfPericenter 28.50 + MeanAnomaly 2.21 } } "GJ 1245 B" { - RA 298.480000 - Dec 44.415556 - Distance 14.812 - SpectralType "M6.0V" - Radius 105000 # approx. for class - AppMag 14.01 -} - -85523 # Gliese 674 -{ - RA 262.166250 - Dec -46.895278 - Distance 14.818 - SpectralType "M2.5V" - Radius 290000 # approx. for class - AppMag 9.37 -} - -57367 # Luyten 145-141 -{ - RA 176.428750 - Dec -64.841389 - Distance 15.092 - SpectralType "DQ6" - AppMag 11.50 -} - -113020 # Ross 780 -{ - RA 343.319583 - Dec -14.263611 - Distance 15.208 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 10.18 -} - -"GJ 1002" -{ - RA 1.682500 - Dec -7.539444 - Distance 15.313 - SpectralType "M5.0V" - Radius 140000 # approx. for class - AppMag 13.77 + RA 298.47974513 + Dec 44.41504008 + Distance 15.2034 # 214.5285 +/- 0.0824 mas + SpectralType "M6V" + AppMag 13.99 } "GJ 3618:Luyten 143-23" { - RA 161.132500 - Dec -61.193889 - Distance 15.554 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 13.92 + RA 161.08847255 + Dec -61.20979537 + Distance 15.7703 # 206.8172 +/- 0.0735 mas + SpectralType "M5.0V" + AppMag 13.920 } +"GJ 1002" +{ + RA 1.67998846 + Dec -7.53806229 + Distance 15.8164 # 206.2134 +/- 0.1281 mas + SpectralType "M5.5V" + Radius 122000 # approx. for class + AppMag 13.837 +} + +# masses from Mann et al. (2015), ApJ 804 (1), 64 +# "How to Constrain Your M Dwarf: Measuring Effective Temperature, +# Bolometric Luminosity, Mass, and Radius" +# http://iopscience.iop.org/article/10.1088/0004-637X/804/1/64/meta Barycenter 54211 "Gliese 412:Lalande 21258" # orbits of A & B unknown { - RA 166.370443 # mass ratio 0.48:0.10 - Dec 43.525816 # - Distance 15.859 + RA 166.3709615 # mass ratio 0.39:0.0952 + Dec 43.52576672 + Distance 15.846 } "Gliese 412 A:Lalande 21258 A" { - RA 166.369167 - Dec 43.526667 - Distance 15.859 - SpectralType "M1.0V" - Radius 341000 # approx. for class - AppMag 8.77 + RA 166.36907492 + Dec 43.52677540 + Distance 15.812 # 206.27 +/- 1.00 mas + SpectralType "M1.0Ve" + AppMag 8.780 } "WX UMa:Gliese 412 B:Lalande 21258 B" { - RA 166.376667 - Dec 43.521667 - Distance 15.859 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 14.44 + RA 166.37869018 + Dec 43.52163453 + Distance 15.9834 # 204.0592 +/- 0.1687 mas + SpectralType "M6.0V" + AppMag 14.45 } 49908 # Groombridge 1618 { - RA 152.842083 - Dec 49.454167 - Distance 15.869 - SpectralType "K7.0V" - AppMag 6.59 -} - -1001741423 "AD Leo:Gliese 388" -{ - RA 154.901667 - Dec 19.869444 - Distance 15.942 - SpectralType "M2.5V" - AppMag 9.29 -} - -# Kirkpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 1506+7027:WISE J1506+7027:WISEPC J150649.97+702736.0" -{ - RA 226.708333 - Dec 70.460000 - Distance 16 - SpectralType "T6.0" - AbsMag 33.5 # for approximate radius in Celestia -} - -# Artigau et al. DENIS J081730.0-615520: An overlooked mid-T -# dwarf in the solar neighborhood -# http://arxiv.org/abs/1006.3577 -"DENIS 0817-6155:DENIS-P J081730.0-615520:2MASS 0817-6155:2MASS J08173001-6155158" -{ - RA 124.375000 - Dec -61.921111 - Distance 16.07 - SpectralType "T6.0" - AbsMag 33.5 # for approximate radius in Celestia -} - -106440 # Luyten 354-89 -{ - RA 323.391667 - Dec -49.008889 - Distance 16.144 - SpectralType "M1.5V" - Radius 324000 # approx. for class - AppMag 8.66 -} - -"LP 944-20" -{ - Texture "browndwarf.*" - RA 54.896667 - Dec -35.428056 - Distance 16.195 - SpectralType "M9.0V" - Radius 56000 # approx. for class - AppMag 18.69 + RA 152.84225009 + Dec 49.45423588 + Distance 15.8797 # 205.3917 +/- 0.0342 mas + SpectralType "K6Ve" + AppMag 6.61 } "DENIS 0255-4700:DENIS-P J025503.5-470050:2MASS 0255-4700:2MASS J02550357-4700509" { - RA 43.765417 - Dec -47.014444 - Distance 16.197 - SpectralType "L7.5V" + RA 43.76539377 + Dec -47.01426260 + Distance 15.8847 # 205.3266 +/- 0.2545 mas + SpectralType "L9V" Radius 70000 # approx. - AppMag 22.92 + AppMag 22.921 } -Barycenter 19849 "Keid:OMI2 Eri:40 Eri:Gliese 166:ADS 3093" # Orbits of A & (BC) unknown +106440 # Gliese 832 { - RA 63.828351 # mass ratio 0.89:(0.5+0.20) - Dec -7.655829 # - Distance 16.255 + RA 323.39156247 + Dec -49.00900096 + Distance 16.1939 # 201.4073 +/- 0.0429 mas + SpectralType "M2V" + Radius 306000 # approx. for class + AppMag 8.672 } -"Keid A:OMI2 Eri A:40 Eri A:Gliese 166 A:ADS 3093 A" +1001741423 "AD Leo:Gliese 388" { - RA 63.817917 - Dec -7.652778 - Distance 16.255 - SpectralType "K0.5V" + RA 154.90117001 + Dec 19.87000390 + Distance 16.1970 # 201.3683 +/- 0.0679 mas + SpectralType "M4Vae" + Radius 180000 # approx. for class + AppMag 9.52 +} + +# mass of component A from Ma et al. (2018), MNRAS 480 (2), 2411 +# "The first super-Earth detection from the high cadence and high radial velocity +# precision Dharma Planet Survey" +# https://arxiv.org/abs/1807.07098 +Barycenter "Keid:OMI2 Eri:40 Eri:Gliese 166:ADS 3093" # Orbits of A & (BC) unknown +{ + RA 63.82884851 # mass ratio 0.78:(0.573:0.2036) + Dec -7.654310215 + Distance 16.305 +} + +19849 "Keid A:OMI2 Eri A:40 Eri A:Gliese 166 A:ADS 3093 A" +{ + RA 63.81799886 + Dec -7.65287169 + Distance 16.257 # 200.62 +/- 0.23 mas + SpectralType "K0V" AppMag 4.43 } Barycenter "Keid BC:OMI2 Eri BC:40 Eri BC:Gliese 166 BC" { - RA 63.841667 - Dec -7.659722 - Distance 16.255 + RA 63.83974566 + Dec -7.65575504 + Distance 16.3523 # 199.4552 mas } +# radius from Bond et al. (2017), ApJ 848 (1), 16 +# "Astrophysical Implications of a New Dynamical Mass for the +# Nearby White Dwarf 40 Eridani B" +# http://iopscience.iop.org/article/10.3847/1538-4357/aa8a63/meta "Keid B:OMI2 Eri B:40 Eri B:Gliese 166 B:ADS 3093 B" { OrbitBarycenter "Keid BC" - SpectralType "DA4" - AppMag 9.52 + SpectralType "DA3" + Radius 9100 + AppMag 9.53 EllipticalOrbit { - Period 252.1 - SemiMajorAxis 9.97 # mass ratio 0.5:0.2 - Eccentricity 0.41 - Inclination 84.4 - AscendingNode 215.2 - ArgOfPericenter 90.4 - MeanAnomaly 214.77 + Period 230.30 + SemiMajorAxis 9.11 # mass ratio 0.573:0.2036 + Eccentricity 0.43 + Inclination 84.13 + AscendingNode 216.59 + ArgOfPericenter 80.71 + MeanAnomaly 44.31 } } "Keid C:OMI2 Eri C:40 Eri C:DY Eri:Gliese 166 C:ADS 3093 C" { OrbitBarycenter "Keid BC" - SpectralType "M4.0V" + SpectralType "M4.5V" Radius 180000 # approx. for class - AppMag 11.24 + AppMag 11.17 EllipticalOrbit { - Period 252.1 - SemiMajorAxis 24.92 # mass ratio 0.5:0.2 - Eccentricity 0.41 - Inclination 84.4 - AscendingNode 215.2 - ArgOfPericenter 270.4 - MeanAnomaly 214.77 + Period 230.3 + SemiMajorAxis 25.64 # mass ratio 0.573:0.2036 + Eccentricity 0.43 + Inclination 84.13 + AscendingNode 216.59 + ArgOfPericenter 260.71 + MeanAnomaly 44.31 } } -112460 # EV Lac -{ - RA 341.702083 - Dec 44.330833 - Distance 16.455 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 10.22 -} - 86214 # Gliese 682 { - RA 264.265417 - Dec -44.319167 - Distance 16.465 - SpectralType "M4.0V" + RA 264.26527385 + Dec -44.31921360 + Distance 16.3320 # 199.7031 +/- 0.0832 mas + SpectralType "M3.5V" Radius 180000 # approx. for class - AppMag 10.95 + AppMag 10.946 } +112460 # EV Lac +{ + RA 341.70721323 + Dec 44.33399228 + Distance 16.4716 # 198.0112 +/- 0.0380 mas + SpectralType "M4.0V" + Radius 225000 # approx. for class + AppMag 10.26 +} + +# Masses from same source as orbit Barycenter 88601 "70 Oph:Gliese 702:ADS 11046:Struve 2272" { - RA 271.363750 - Dec 2.500000 - Distance 16.644 + RA 271.36368827 + Dec 2.50009883 + Distance 16.580 # 196.72 +/- 0.83 mas } "70 Oph A:Gliese 702 A:ADS 11046 A:Struve 2272 A" { OrbitBarycenter "70 Oph" SpectralType "K0V" - AppMag 4.21 + AppMag 4.13 - EllipticalOrbit { - Period 88.34 - SemiMajorAxis 10.55 # mass ratio 0.88:0.73 + EllipticalOrbit { # fully specified orientation + Period 88.44 + SemiMajorAxis 10.37 # mass ratio 0.89:0.73 Eccentricity 0.50 - Inclination 116.40 - AscendingNode 331.07 - ArgOfPericenter 341.25 - MeanAnomaly 63.90 + Inclination 28.75 + AscendingNode 73.59 + ArgOfPericenter 285.57 + MeanAnomaly 63.92 } } "70 Oph B:Gliese 702 B:ADS 11046 B:Struve 2272 B" { OrbitBarycenter "70 Oph" - SpectralType "K5V" - AppMag 6.01 + SpectralType "K4V" + AppMag 6.07 - EllipticalOrbit { - Period 88.34 - SemiMajorAxis 12.72 # mass ratio 0.88:0.73 + EllipticalOrbit { # fully specified orientation + Period 88.44 + SemiMajorAxis 12.64 # mass ratio 0.89:0.73 Eccentricity 0.50 - Inclination 116.40 - AscendingNode 331.07 - ArgOfPericenter 161.25 - MeanAnomaly 63.90 + Inclination 28.75 + AscendingNode 73.59 + ArgOfPericenter 105.57 + MeanAnomaly 63.92 } } +# rotational parameters from Monnier et al. (2007), Science 317 (5836), 342 +# "Imaging the Surface of Altair" +# https://arxiv.org/abs/0706.0867 97649 # Altair { - RA 297.695833 - Dec 8.868333 - Distance 16.692 + RA 297.69582730 + Dec 8.86832120 + Distance 16.730 # 194.95 +/- 0.57 SpectralType "A7IV" - AppMag 0.77 + AppMag 0.76 - RotationPeriod 10.4 - SemiAxes [ 1 0.88 1 ] # equatorial radius 14% greater than polar + SemiAxes [ 1 0.81 1 ] # equatorial radius 24% greater than polar + + UniformRotation + { + Period 10.4 + Inclination 77.86 # inclination (i) = 57.2 deg + AscendingNode 252.65 # orientation (alpha) = -61.8 deg + } } Barycenter "GJ 1116" # orbit of A & B unknown { - RA 134.562083 # mass ratio 0.11:0.10 - Dec 19.762724 # - Distance 17.059 + RA 134.5629579 # mass ratio 0.11:0.10 + Dec 19.76308611 + Distance 16.735 } "EI Cnc:GJ 1116 A" { - RA 134.562083 - Dec 19.761944 - Distance 17.059 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 14.06 + RA 134.56280747 + Dec 19.76340108 + Distance 16.7498 # 194.7225 +/- 0.1251 mas + SpectralType "M8Ve" + Radius 76500 # approx. for class + AppMag 13.93 } "GJ 1116 B:LP 426-40" { - RA 134.562083 - Dec 19.763611 - Distance 17.059 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 14.92 + RA 134.56312344 + Dec 19.76273963 + Distance 16.7189 # 195.0836 +/- 0.1754 mas + SpectralType "M7V" + Radius 83500 # approx. for class + AppMag 13.75 +} + +# rotation period from Burningham et al. (2016), MNRAS 463 (2), 2202 +# "A LOFAR mini-survey for low-frequency radio emission from the nearest brown +# dwarfs" +# https://academic.oup.com/mnras/article/463/2/2202/2892466 +"WISE 1506+7027:WISE J150649.97+702736.1" +{ + RA 226.71850107 + Dec 70.45697728 + Distance 16.8516 # 193.5457 +/- 0.9420 mas + AppMag 17.48 # calculated from J, H, and Ks bands + SpectralType "T6" + RotationPeriod 1.74 + Temperature 1000 } 1006050134 "GJ 3379:Giclas 99-49" { - RA 90.015000 - Dec 2.705556 - Distance 17.097 - SpectralType "M3.5V" + RA 90.01459942 + Dec 2.70655466 + Distance 16.9813 # 192.0675 +/- 0.0715 mas + SpectralType "M3.5Ve" Radius 225000 # approx. for class AppMag 11.31 } -"GJ 3323:LP 656-38:RECONS 3" +"WISE J0817-6155:WISEP J081729.74-615504.1" { - RA 75.487500 - Dec -6.946389 - Distance 17.357 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.22 -} - -# Leggett S.K. et al. (2009) "The phyical properties of four -# 600K T dwarfs." ApJ, 695, 1517. -# (http://arxiv.org/abs/0901.4093) -# unresolved binary; separation and orbit unknown -"2MASS 0939-2448 A:2MASS J09393548-2448279 A" -{ - Texture "exo-class4night.*" - RA 144.897823 - Dec -24.80775 - Distance 17.414 - SpectralType "T8V" - Temperature 600 - Radius 60000 # approx. - AbsMag 50 # extremely low -} - -"2MASS 0939-2448 B:2MASS J09393548-2448279 B" -{ - Texture "exo-class4night.*" - RA 144.897843 - Dec -24.80775 - Distance 17.414 - SpectralType "T8V" - Temperature 600 - Radius 60000 # approx. - AbsMag 50 # extremely low + RA 124.37499532 + Dec -61.92101733 + Distance 17.0290 # 191.5301 +/- 0.6037 mas + SpectralType "T6V" + AbsMag 34 # for approximate radius in Celestia } 57544 # Gliese 445 { - RA 176.922500 - Dec 78.691111 - Distance 17.418 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 10.79 + RA 176.92245210 + Dec 78.69116094 + Distance 17.1424 # 190.2625 +/- 0.0475 mas + SpectralType "M4.0Ve" + Radius 181000 # approx. for class + AppMag 10.84 +} + +# magnitude from Perez Garrido et al. (2014), A&A 567, A6 +# "2MASS J154043.42-510135.7: a new addition to the 5 pc population" +# https://www.aanda.org/articles/aa/abs/2014/07/aa23615-14/aa23615-14.html +"WISE 1540-5101:WISE J154045.65-510139.2" +{ + RA 235.18140398 + Dec -51.02665765 + Distance 17.3441 # 191.5301 +/- 0.6037 mas + SpectralType "M6.5" + Radius 83500 # approx. for class + AppMag 15.26 # measured w/ ESO Faint Object Spectrograph and Camera +} + +# Leggett et al. (2009), ApJ 695, 1517 +# "The phyical properties of four 600K T dwarfs." +# http://iopscience.iop.org/article/10.1088/0004-637X/695/2/1517/meta +# unresolved binary; separation and orbit unknown +"2MASS 0939-2448 A:2MASS J09393548-2448279 A" +{ + RA 144.897865 + Dec -24.807761 + Distance 17.414 # 187.30 +/- 4.60 mas + SpectralType "T8V" + Temperature 600 + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +"2MASS 0939-2448 B:2MASS J09393548-2448279 B" +{ + RA 144.897885 + Dec -24.807761 + Distance 17.414 # 187.30 +/- 4.60 mas + SpectralType "T8V" + Temperature 600 + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +"GJ 3323:LP 656-38:RECONS 3" +{ + RA 75.48927544 + Dec -6.94621441 + Distance 17.5331 # 186.0231 +/- 0.0590 + SpectralType "M4.0Ve" + Radius 180000 # approx. for class + AppMag 12.196 } 67155 # Lalande 25372 { - RA 206.432500 - Dec 14.891389 - Distance 17.657 - SpectralType "M1.0V" - Radius 341000 # approx. for class - AppMag 8.46 + RA 206.43239772 + Dec 14.89152033 + Distance 17.7274 # 183.9836 +/- 0.0509 + SpectralType "M2V" + Radius 306000 # approx. for class + AppMag 8.50 } -# Kirpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 1741+2553:WISE J1741+2553:WISEPA J174124.26+255319.5" +# mass ratio from Sahu et al. (2017), Science 356 (6342), 1046 +# "Relativistic deflection of background starlight measures the mass of +# a nearby white dwarf star" +# https://arxiv.org/abs/1706.02037 +# orbit listed in Sixth Orbit Catalogue is of poor quality, so unused +Barycenter 21088 "Gliese 169.1:Stein 2051" { - Texture "exo-class4night.*" - RA 265.351250 - Dec 25.888889 - Distance 17.9 - SpectralType "T9.0" - Temperature 500 # approx. - Radius 60000 # approx. - AbsMag 50 # extremely low -} - -Barycenter 21088 "Gliese 169.1:Stein 2051" # orbit of A & B unknown -{ - RA 67.796397 # mass ratio 0.224:0.50 - Dec 58.977167 # - Distance 18.068 + RA 67.79800245 # mass ratio MB/MA 2.07 + Dec 58.97707796 + Distance 18.020 } "Gliese 169.1 A:Stein 2051 A" { - RA 67.799375 - Dec 58.977167 - Distance 18.068 + RA 67.79795272 + Dec 58.97706349 + Distance 18.0774 # 180.4215 +/- 0.5863 mas SpectralType "M4V" Radius 180000 # approx. for class - AppMag 11.04 + AppMag 10.977 } 1020623744 "Gliese 169.1 B:Stein 2051 B" { - RA 67.795063 - Dec 58.977167 - Distance 18.068 + RA 67.80237894 + Dec 58.97813685 + Distance 17.9917 # 181.2815 +/- 0.0450 mas SpectralType "DC5" - AppMag 12.43 + AppMag 11.19 } 33226 # Wolf 294 { - RA 103.704167 - Dec 33.268056 - Distance 18.313 - SpectralType "M3.0V" + RA 103.70399048 + Dec 33.26817738 + Distance 18.2043 # 179.1642 +/- 0.0632 mas + SpectralType "M3V" Radius 270000 # approx. for class - AppMag 10.02 + AppMag 10.11 +} + +103039 # LP 816-60 +{ + RA 313.13756964 + Dec -16.97472438 + Distance 18.3106 # from 178.1243 +/- 0.0849 mas + SpectralType "M4V" + Radius 181000 # approx. for class + AppMag 11.458 +} + +# parallax from Faherty et al. (2012), ApJ 752, (1), 56 +# "The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs" +# http://iopscience.iop.org/article/10.1088/0004-637X/752/1/56/meta +# radius and temperature from Line et al. (2017), ApJ 848 (2), 83 +# "Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs. II. Properties +# of 11 T dwarfs" +# http://iopscience.iop.org/0004-637X/848/2/83/ +"2MASS 1114-2618:2MASS J11145133-2618235" +{ + RA 168.713904 + Dec -26.306544 + Distance 18.45 # 176.8 +/- 7.0 mas + SpectralType "T7.5V" + Temperature 680 + Radius 64000 + AbsMag 40 # extremely low +} + +# parallax from Marsh et al. (2013), ApJ 762 (2), 119 +# "Parallaxes and Proper Motions of Ultracool Brown Dwarfs of Spectral +# Types Y and Late T" +# http://iopscience.iop.org/article/10.1088/0004-637X/762/2/119/meta +# rotation period, radius from Burningham et al. (2016), MNRAS 463, 2 +# "A LOFAR mini-survey for low-frequency radio emission from the nearest brown dwarfs" +# https://academic.oup.com/mnras/article/463/2/2202/2892466 +"WISE 1741+2553:WISE J174124.25+255319.6" +{ + RA 265.352586 + Dec 25.892878 + Distance 18.53 # 176 +/- 25 mas + SpectralType "T9V" + Temperature 620 + Radius 60000 # approx. + AbsMag 40 # extremely low + RotationPeriod 2 } "2MASS 1835+3259:2MASS J18353790+3259545" { - RA 278.907917 - Dec 32.998333 - Distance 18.480 + RA 278.90783482 + Dec 32.99814204 + Distance 18.5501 # from 175.8244 +/- 0.0905 mas SpectralType "M8.5V" Radius 66000 # approx. for class AppMag 18.27 @@ -1433,151 +1529,112 @@ Barycenter 21088 "Gliese 169.1:Stein 2051" # orbit of A & B unknown 25878 # Wolf 1453 { - RA 82.864167 - Dec -3.677222 - Distance 18.533 - SpectralType "M1.0V" - AppMag 7.95 -} - -103039 # LP 816-60 -{ - RA 313.137500 - Dec -16.974722 - Distance 18.635 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.50 + RA 82.86414936 + Dec -3.67722821 + Distance 18.5919 # from 175.4287 +/- 0.0672 mas + SpectralType "M1.5Ve" + Radius 324000 # approx. for class + AppMag 7.968 } +# coordinates, parallax from Dupuy & Liu (2012), ApJS 201 (2), 19 +# "The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition" +# http://iopscience.iop.org/article/10.1088/0067-0049/201/2/19/meta "2MASS 0415-0935:2MASS J04151954-0935066" { - Texture "exo-class4night.*" - RA 63.83125 - Dec -9.585 - Distance 18.709 + RA 63.8381022 + Dec -9.5835266 + Distance 18.62 # 175.2 +/- 1.7 mas SpectralType "T8.0V" - Temperature 760 + Temperature 750 Radius 60000 # approx. - AbsMag 50 # extremely low + AbsMag 40 # extremely low } 96100 # Sig Dra { - RA 293.090000 - Dec 69.661111 - Distance 18.768 - SpectralType "G9V" - AppMag 4.67 + RA 293.08995958 + Dec 69.66117632 + Distance 18.769 # 173.77 +/- 0.18 mas + SpectralType "K0V" + AppMag 4.680 } Barycenter 29295 "Gliese 229:Luyten 668-21:LPM 230" # orbit of A & B unknown { - RA 92.644265 # mass ratio 0.556:0.05 - Dec -21.864482 # - Distance 18.770 + RA 92.64426427 # mass ratio 0.556:0.05 + Dec -21.8644676 + Distance 18.7775 # 173.6955 +/- 0.0457 mas } "Gliese 229 A:Luyten 668-21 A:LPM 230 A" { - RA 92.644231 - Dec -21.864643 - Distance 18.770 - SpectralType "M1.5V" - Radius 324000 # approx. for class - AppMag 8.14 + RA 92.64423021 + Dec -21.86462723 + Distance 18.7775 + SpectralType "M1V" + Radius 341000 # approx. for class + AppMag 8.125 } "Gliese 229 B:Luyten 668-21 B:LPM 230 B" { RA 92.644643 Dec -21.862692 - Distance 18.770 - SpectralType "T6.0V" + Distance 18.7775 + SpectralType "T6.5V" AbsMag 33.5 # for approximate radius in Celestia } 26857 # Ross 47 { - RA 85.538750 - Dec 12.489444 - Distance 19.018 - SpectralType "M4.0V" + RA 85.53861374 + Dec 12.48933659 + Distance 18.8850 # 172.7068 +/- 0.0788 mas + SpectralType "M4V" Radius 180000 # approx. for class - AppMag 11.57 -} - -86990 # Luyten 205-128 -{ - RA 266.642500 - Dec -57.319167 - Distance 19.063 - SpectralType "M3.0V" - Radius 270000 # approx. for class - AppMag 10.76 -} - -Barycenter 94761 "Gliese 752:Ross 652:Wolf 1055" # orbit of A & B unknown -{ - RA 289.232026 # mass ratio 0.494:0.073 - Dec 5.166493 # - Distance 19.078 -} - -"V1428 Aql:Gliese 752 A:Ross 652 A:Wolf 1055 A" -{ - RA 289.230417 - Dec 5.1688889 - Distance 19.078 - SpectralType "M2.5V" - Radius 290000 # approx. for class - AppMag 9.10 -} - -"Van Biesbroek's Star:V1298 Aql:Gliese 752 B:Ross 652 B:Wolf 1055 B:VB 10" -{ - RA 289.242917 - Dec 5.150278 - Distance 19.078 - SpectralType "M8.0V" - Radius 77000 # approx. for class - AppMag 17.45 + AppMag 11.509 } +# mass and radius of A from Demory et al. (2009), A&A 505 (1), 205 +# "Mass-radius relation of low and very low-mass stars revisited with the VLTI" +# https://www.aanda.org/articles/aa/full_html/2009/37/aa11976-09/aa11976-09.html +# masses of B, C from same sources as orbit Barycenter "Gliese 570:ADS 9446" { - RA 224.363404 # mass ratio 0.76:(0.49+0.34) - Dec -21.413381 # - Distance 19.116 + RA 224.363313679 # mass ratio 0.802:(0.586:0.390) + Dec -21.41332223 + Distance 19.1844 # 170.0112 +/- 0.0851 mas } -73184 "KX Lib:Gliese 570 A:ADS 9446 A" # fully specified orientation +73184 "KX Lib:Gliese 570 A:ADS 9446 A" { OrbitBarycenter "Gliese 570" SpectralType "K4V" AppMag 5.64 + Radius 514100 - EllipticalOrbit { - Period 2130 - SemiMajorAxis 99.39 # mass ratio 0.76:(0.49+0.34) - Eccentricity 0.2 - Inclination 142.62 - AscendingNode 191.56 + EllipticalOrbit { # fully specified orientation + Period 2130 + SemiMajorAxis 104.4 # mass ratio 0.802:(0.586:0.390) + Eccentricity 0.20 + Inclination 142.6 + AscendingNode 191.6 ArgOfPericenter 129.2 MeanAnomaly 52.6 } } -Barycenter 73182 "Gliese 570 BC" # fully specified orientation +Barycenter 73182 "Gliese 570 BC" { OrbitBarycenter "Gliese 570" - EllipticalOrbit { - Period 2130 - SemiMajorAxis 91.01 # mass ratio 0.76:(0.49+0.34) - Eccentricity 0.2 - Inclination 142.62 - AscendingNode 191.56 + EllipticalOrbit { # fully specified orientation + Period 2130 + SemiMajorAxis 85.8 # mass ratio 0.802:(0.586:0.390) + Eccentricity 0.20 + Inclination 142.6 + AscendingNode 191.6 ArgOfPericenter 309.2 MeanAnomaly 52.6 } @@ -1588,16 +1645,16 @@ Barycenter 73182 "Gliese 570 BC" # fully specified orientation OrbitBarycenter "Gliese 570 BC" SpectralType "M1.5V" Radius 324000 # approx. for class - AppMag 8.30 + AppMag 8.33 - EllipticalOrbit { - Period 0.847 - SemiMajorAxis 0.34 # mass ratio 0.49:0.34 + EllipticalOrbit { # fully specified orientation + Period 0.846 + SemiMajorAxis 0.35 # mass ratio 0.586:0.390 Eccentricity 0.76 - Inclination 93.84 - AscendingNode 246.91 - ArgOfPericenter 214.71 - MeanAnomaly 34.00 + Inclination 90.68 + AscendingNode 30.52 + ArgOfPericenter 221.92 + MeanAnomaly 45.19 } } @@ -1606,163 +1663,197 @@ Barycenter 73182 "Gliese 570 BC" # fully specified orientation OrbitBarycenter "Gliese 570 BC" SpectralType "M3V" Radius 270000 # approx. for class - AppMag 9.96 + AppMag 9.94 - EllipticalOrbit { - Period 0.847 - SemiMajorAxis 0.48 # mass ratio 0.49:0.34 - Eccentricity 0.76 - Inclination 93.84 - AscendingNode 246.91 - ArgOfPericenter 34.71 - MeanAnomaly 34.00 + EllipticalOrbit { # fully specified orientation + Period 0.846 + SemiMajorAxis 0.53 # mass ratio 0.586:0.390 + Eccentricity 0.76 + Inclination 90.68 + AscendingNode 30.52 + ArgOfPericenter 41.92 + MeanAnomaly 45.19 } } +# radius and temperature from Line et al. (2015), ApJ 807 (2), 183 +# "Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs. I. Characterizing +# Benchmarks, Gl 570D and HD 3651B" +# http://iopscience.iop.org/article/10.1088/0004-637X/807/2/183/meta "Gliese 570 D:ADS 9446 D" { - Texture "exo-class4night.*" - RA 224.312500 - Dec -21.363889 - Distance 19.116 - SpectralType "T7.5V" - Temperature 750 - Radius 60000 # approx. - AbsMag 50 # extremely low + RA 224.31233 + Dec -21.36328 + Distance 19.184 + SpectralType "T8V" + Temperature 710 + Radius 80000 + AbsMag 40 # extremely low +} + +86990 # Luyten 205-128 +{ + RA 266.64263979 + Dec -57.31904446 + Distance 19.2013 # 169.8613 +/- 0.1184 mas + SpectralType "M3.5V" + Radius 225000 # approx. for class + AppMag 10.783 +} + +117473 # Gliese 908 +{ + RA 357.30218808 + Dec 2.40122307 + Distance 19.2583 # 169.3585 +/- 0.0595 mas + SpectralType "M1V" + Radius 341000 # approx. for class + AppMag 8.993 +} + +# Parameters of A from Karminski et al. (2018), A&A 618, A115 +# "The CARMENES search for exoplanets around M dwarfs. A Neptune-mass +# planet traversing the habitable zone around HD 180617" +# https://arxiv.org/abs/1808.01183 +# Parameters of B from Tsuji et al. (2016), PASJ 68 (1), 1331 +# "Near-infrared spectroscopy of M dwarfs. III. Carbon and oxygen abundances +# in late M dwarfs, including the dusty rapid rotator 2MASSI J1835379+325954" +# https://arxiv.org/abs/1511.04682 +Barycenter 94761 "Gliese 752:Ross 652:Wolf 1055" # orbit of A & B unknown +{ + RA 289.231870107 # mass ratio 0.45:0.09 + Dec 5.1658232850 + Distance 19.2810 # 169.1590 +/- 0.0520 mas +} + +"V1428 Aql:Gliese 752 A:Ross 652 A:Wolf 1055 A" +{ + RA 289.23023552 + Dec 5.16889968 + Distance 19.2810 + SpectralType "M2.5V" + Radius 315000 + AppMag 9.115 + RotationPeriod 1105 +} + +"Van Biesbroek's Star:V1298 Aql:Gliese 752 B:Ross 652 B:Wolf 1055 B:VB 10" +{ + RA 289.242917 + Dec 5.150278 + Distance 19.2810 # used Gaia DR parallax of A + SpectralType "M8.0V" + Radius 86000 + AppMag 17.30 } "Gliese 754:Luyten 347-14" { - RA 290.200833 - Dec -45.558889 - Distance 19.280 - SpectralType "M4.0V" + RA 290.19993122 + Dec -45.55823034 + Distance 19.2887 # 169.0921 +/- 0.2165 mas + SpectralType "M4.5V" Radius 180000 # approx. for class AppMag 12.23 } 76074 # Gliese 588 { - RA 233.053750 - Dec -41.275556 - Distance 19.355 + RA 233.05388594 + Dec -41.27559211 + Distance 19.2983 # 169.0074 +/- 0.0580 mas SpectralType "M2.5V" Radius 290000 # approx. for class - AppMag 9.31 + AppMag 9.311 } -Barycenter 1242 "GJ 1005:Luyten 722-22" +# parameters from Martin et al. (2018) +"WISE 0350−5658:WISE J035000.32-565830.2" { - RA 3.867083 - Dec -16.133889 - Distance 19.374 -} - -"GJ 1005 A:Luyten 722-22 A" -{ - OrbitBarycenter "Luyten 722-22" - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.60 - - EllipticalOrbit { - Period 4.566 - SemiMajorAxis 0.62 # mass ratio 0.18:0.11 - Eccentricity 0.364 - Inclination 72.3 - AscendingNode 85.2 - ArgOfPericenter 169.4 - MeanAnomaly 5.4 - } -} - -"GJ 1005 B:Luyten 722-22 B" -{ - OrbitBarycenter "Luyten 722-22" - SpectralType "M7V" - Radius 84000 # approx. for class - AppMag 14.02 - - EllipticalOrbit { - Period 4.566 - SemiMajorAxis 1.01 # mass ratio 0.18:0.11 - Eccentricity 0.364 - Inclination 72.3 - AscendingNode 85.2 - ArgOfPericenter 349.4 - MeanAnomaly 5.4 - } + RA 57.500996 + Dec -56.975638 + Distance 19.317 # 168.84 +/- 8.53 mas + SpectralType "Y1V" + Temperature 300 + Radius 60000 # approx. + AbsMag 40 # extremely low } +# Used Gaia DR2 parallax for B Barycenter 3821 "Achird:ETA Cas:24 Cas:Gliese 34:ADS 671" { - RA 12.27625 - Dec 57.815278 - Distance 19.388 + RA 12.274657128 # mass ratio 1.07:0.55 + Dec 57.81608312 + Distance 19.328 # 168.7521 +/- 0.0377 mas } +# Mass ratio from theoretical values from same source as orbit "Achird A:ETA Cas A:24 Cas A:Gliese 34 A:ADS 671 A" { - OrbitBarycenter "Achird" - SpectralType "G3V" - AppMag 3.46 + OrbitBarycenter "ETA Cas" + SpectralType "G0V" + AppMag 3.44 EllipticalOrbit { - Period 480 - SemiMajorAxis 24.99 # mass ratio 1.11:0.60 - Eccentricity 0.497 - Inclination 152.19 - AscendingNode 6.96 - ArgOfPericenter 179.63 - MeanAnomaly 82.80 + Period 479.27 + SemiMajorAxis 24.22 # mass ratio 1.07:0.55 + Eccentricity 0.50 + Inclination 152.40 + AscendingNode 8.78 + ArgOfPericenter 182.11 + MeanAnomaly 82.68 } } "Achird B:ETA Cas B:24 Cas B:Gliese 34 B:ADS 671 B" { - OrbitBarycenter "Achird" - SpectralType "K7.0V" - AppMag 7.21 + OrbitBarycenter "ETA Cas" + SpectralType "K7V" + AppMag 7.51 EllipticalOrbit { - Period 480 - SemiMajorAxis 46.24 # mass ratio 1.11:0.60 - Eccentricity 0.497 - Inclination 152.19 - AscendingNode 6.96 - ArgOfPericenter 359.63 - MeanAnomaly 82.80 + Period 479.27 + SemiMajorAxis 47.12 # mass ratio 1.07:0.55 + Eccentricity 0.50 + Inclination 152.40 + AscendingNode 8.78 + ArgOfPericenter 2.11 + MeanAnomaly 82.68 } } Barycenter "36 Oph:Gliese 663:ADS 10417" # orbit of (AB) & C unknown { - RA 258.901180 # mass ratio (0.85+0.85):0.7 - Dec -26.586250 # - Distance 19.401 + RA 258.907618286 # mass ratio (0.75:0.76):0.72 + Dec -26.58414637 + Distance 19.4373 } +# Distance from average of distances from Gaia DR2 parallax for A and B Barycenter 84405 "36 Oph AB:Gliese 663 AB" { - RA 258.837500 - Dec -26.602778 - Distance 19.401 + RA 258.837020242 # mass ratio 0.75:0.76 + Dec -26.60226476 # A: 167.8221 +/- 0.1556 mas + Distance 19.4373 # B: 167.7764 +/- 0.2210 mas } +# Average masses from Luck, R. E. (2017), AJ 153 (1), 21 +# "Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants" +# http://iopscience.iop.org/article/10.3847/1538-3881/153/1/21/meta "36 Oph A:Gliese 663 A:ADS 10417 A" { OrbitBarycenter "36 Oph AB" - SpectralType "K1.5V" - AppMag 5.07 + SpectralType "K2V" + AppMag 5.08 EllipticalOrbit { Period 470.9 - SemiMajorAxis 38.8 # mass ratio 0.85:0.85 - Eccentricity 0.916 - Inclination 13.35 + SemiMajorAxis 38.99 # mass ratio 0.75:0.76 + Eccentricity 0.92 + Inclination 13.35 AscendingNode 348.86 - ArgOfPericenter 271.0 - MeanAnomaly 246.3 + ArgOfPericenter 270.97 + MeanAnomaly 246.27 } } @@ -1773,226 +1864,284 @@ Barycenter 84405 "36 Oph AB:Gliese 663 AB" AppMag 5.08 EllipticalOrbit { - Period 470.9 - SemiMajorAxis 38.8 # mass ratio 0.85:0.85 - Eccentricity 0.916 - Inclination 13.35 - AscendingNode 348.86 - ArgOfPericenter 91.0 - MeanAnomaly 246.3 + Period 470.9 + SemiMajorAxis 38.48 # mass ratio 0.75:0.76 + Eccentricity 0.92 + Inclination 13.35 + AscendingNode 348.86 + ArgOfPericenter 90.97 + MeanAnomaly 246.27 } } 84478 "36 Oph C:V2215 Oph:Gliese 664:Gliese 663 C:ADS 10417 C" { - RA 259.055833 - Dec -26.546111 - Distance 19.401 + RA 259.05567807 + Dec -26.5461481 + Distance 19.4373 # used same distance as A and B SpectralType "K5V" - AppMag 6.32 + AppMag 6.34 } -117473 # Gliese 908 +# parameters from Martin et al. (2018) +# BT-Settl model parameters from Beichman et al. (2014), ApJ 783 (2), 68 +# "WISE Y Dwarfs as Probes of the Brown Dwarf-Exoplanet Connection" +# https://iopscience.iop.org/article/10.1088/0004-637X/783/2/68/meta +"WISE 1541-2250:WISE J1541-2250:WISEPA J154151.66-225025.2" { - RA 357.302083 - Dec 2.401111 - Distance 19.412 - SpectralType "M1.0V" - Radius 341000 # approx. for class - AppMag 8.98 + RA 235.464061 + Dec -22.840554 + Distance 19.524 # 167.05 +/- 4.19 mas + SpectralType "Y1" + Temperature 350 + Radius 69900 + AbsMag 40 # extremely low } 37766 # Ross 882 { - RA 116.167500 - Dec 3.552500 - Distance 19.509 + RA 116.16738595 + Dec 3.55246606 + Distance 19.5281 # 167.0186 +/- 0.0592 mas SpectralType "M4.0V" Radius 180000 # approx. for class - AppMag 11.19 + AppMag 11.225 +} + +# masses and parallaxes from Benedict et al. (2016), AJ 152 (5), 141 +# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence +# M Dwarfs" +# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta +Barycenter 1242 "GJ 1005:Luyten 722-22" +{ + RA 3.86712874 + Dec -16.133786 + Distance 19.577 # 166.6 +/- 0.3 mas +} + +"GJ 1005 A:Luyten 722-22 A" +{ + OrbitBarycenter "GJ 1005" + SpectralType "M3.5V" + AppMag 11.60 + + EllipticalOrbit { # fully specified orientation + Period 4.565 + SemiMajorAxis 0.70 # mass ratio 0.179:0.112 + Eccentricity 0.36 + Inclination 72.44 + AscendingNode 85.33 + ArgOfPericenter 182.79 + MeanAnomaly 5.81 + } +} + +"GJ 1005 B:Luyten 722-22 B" +{ + OrbitBarycenter "GJ 1005" + SpectralType "M7V" + AppMag 14.02 + + EllipticalOrbit { # fully specified orientation + Period 4.565 + SemiMajorAxis 1.12 # mass ratio 0.179:0.112 + Eccentricity 0.36 + Inclination 72.44 + AscendingNode 85.33 + ArgOfPericenter 2.79 + MeanAnomaly 5.81 + } } Barycenter 99461 "Gliese 783:CD-36 13940:J Herschel 5173:HJ 5173" # orbit of A & B unknown { - RA 302.798770 # mass ratio 0.82:0.20 - Dec -36.097603 # + RA 302.7999508 # mass ratio 0.82:0.20 + Dec -36.1014624 Distance 19.618 } "Gliese 783 A:CD-36 13940 A:J Herschel 5173 A:HJ 5173 A" { - RA 302.79837 - Dec -36.097385 - Distance 19.618 + RA 302.79974369 + Dec -36.10120932 + Distance 19.6211 # 166.2274 +/- 0.1256 mas SpectralType "K2.5V" - AppMag 5.31 + AppMag 5.32 } "Gliese 783 B:CD-36 13940 B:J Herschel 5173 B:HJ 5173 B" { - RA 302.8004 - Dec -36.09849 - Distance 19.618 - SpectralType "M4.0V" + RA 302.8008 + Dec -36.10250 + Distance 19.6211 + SpectralType "M3.5V" Radius 180000 # approx. for class AppMag 11.50 } 15510 # 82 Eri { - RA 49.981667 - Dec -43.069722 - Distance 19.711 - SpectralType "G8V" - AppMag 4.26 + RA 49.98187890 + Dec -43.06978264 + Distance 19.711 # 165.47 +/- 0.19 mas + SpectralType "G6V" + AppMag 4.27 } -# Kirpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 0254+0223:WISE J0254+0223:WISEPA J025409.45+022359.1" -{ - Texture "exo-class4night.*" - RA 43.539583 - Dec 2.399722 - Distance 19.8 - SpectralType "T8.0" - Temperature 500 - Radius 60000 # approx. - AbsMag 50 # extremely low -} - -"GJ 1221:LP 44-113" -{ - RA 267.027917 - Dec 70.874722 - Distance 19.804 - SpectralType "DXP9" - AppMag 14.22 -} - -Barycenter "Gliese 338:ADS 7251:Struve 1321" -{ - RA 138.598959 - Dec 52.775278 - Distance 19.921 -} - -45343 "Gliese 338 A:ADS 7251 A:Struve 1321 A" -{ - OrbitBarycenter "Struve 1321" - SpectralType "M0V" - Radius 432000 # approx. for class - AppMag 7.64 - - EllipticalOrbit { - Period 975 - SemiMajorAxis 51.58 # mass ratio 06:0.6 - Eccentricity 0.28 - Inclination 113 - AscendingNode 13 - ArgOfPericenter 276 - MeanAnomaly 264 - } -} - -120005 "Gliese 338 B:ADS 7251 B:Struve 1321 B" -{ - OrbitBarycenter "Struve 1321" - SpectralType "K7V" - AppMag 7.70 - - EllipticalOrbit { - Period 975 - SemiMajorAxis 51.58 # mass ratio 06:0.6 - Eccentricity 0.28 - Inclination 113 - AscendingNode 13 - ArgOfPericenter 96 - MeanAnomaly 264 - } -} - -99240 # Del Pav -{ - RA 302.181667 - Dec -66.181944 - Distance 19.923 - SpectralType "G8IV" - AppMag 3.55 -} - -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) +# Barry et al. (2012), ApJ 760 (1), 55 +# "A Precise Physical Orbit for the M-dwarf Binary Gliese 268" +# http://iopscience.iop.org/article/10.1088/0004-637X/760/1/55/meta Barycenter 34603 "Gliese 268:Ross 986" { - RA 107.5075 - Dec 38.529444 - Distance 19.960 + RA 3.86712874 + Dec -16.133786 + Distance 19.8103 # 164.6395 +/- 0.1338 mas } "QY Aur:Gliese 268 A:Ross 986 A" { - OrbitBarycenter "Ross 986" + OrbitBarycenter "Gliese 268" SpectralType "M4.5V" - Radius 160000 # approx. for class AppMag 12.05 EllipticalOrbit { - Period 0.02856 # 10.43dy - SemiMajorAxis 0.03 # mass ratio 0.17:0.16 - ArgOfPericenter 180 + Period 0.028566 + SemiMajorAxis 31.01 # mass ratio 0.22599:0.19248 + Eccentricity 0.32 + Inclination 35.99 + AscendingNode 130.70 + ArgOfPericenter 349.54 + MeanAnomaly 248.39 } } "Gliese 268 B:Ross 986 B" { - OrbitBarycenter "Ross 986" + OrbitBarycenter "Gliese 268" SpectralType "M6V" - Radius 105000 # approx. for class AppMag 12.45 EllipticalOrbit { - Period 0.02856 # 10.43dy - SemiMajorAxis 0.03 # mass ratio 0.17:0.16 + Period 0.028566 + SemiMajorAxis 36.41 # mass ratio 0.22599:0.19248 + Eccentricity 0.32 + Inclination 35.99 + AscendingNode 130.70 + ArgOfPericenter 169.54 + MeanAnomaly 248.39 } } +99240 # Del Pav +{ + RA 302.18170612 + Dec -66.18206758 + Distance 19.923 # 163.71 +/- 0.17 mas + SpectralType "G8IV" + AppMag 3.56 +} + +"2MASS 0136+0933:2MASS J01365662+0933473:SIMP J013656.5+093347" +{ + RA 24.23566572 + Dec 9.56314736 + Distance 19.9261 # 163.6824 +/- 0.7223 mas + SpectralType "T2.5V" + AbsMag 27.5 # for approximate radius in Celestia +} + +# parallax from Faherty et al. (2012), ApJ 752, (1), 56 +# "The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs" +# http://iopscience.iop.org/article/10.1088/0004-637X/752/1/56/meta "2MASS 0937+2931:2MASS J09373487+2931409" { - RA 144.391667 - Dec 29.516667 - Distance 19.973 + RA 144.395333 + Dec 29.528056 + Distance 19.961 # 163.39 +/- 1.76 mas SpectralType "T6.0V" - AbsMag 33.5 # for approximate radius in Celestia + AbsMag 33.5 # for approximate radius in Celestia } 99701 # Gliese 784 { - RA 303.472500 - Dec -45.163889 - Distance 20.215 - SpectralType "M0.0V" + RA 303.47248496 + Dec -45.16402041 + Distance 20.0932 # 162.3212 +/- 0.0495 mas + SpectralType "M0V" Radius 432000 # approx. for class - AppMag 7.95 + AppMag 7.966 +} + +# Masses from same source as orbit +Barycenter "WISE 0720-0846:WISE J072003.20-084651.2" +{ + RA 110.01355700 + Dec -8.78052900 + Distance 20.22 # 6.2 +/- 0.7 pc +} + +# Apparent magnitude of A from Ivanov et al. (2015), A&A 574, A64 +# "Properties of the solar neighbor WISE J072003.20-084651.2" +# https://www.aanda.org/articles/aa/abs/2015/02/aa24883-14/aa24883-14.html +"WISE J0720-0846 A:WISE J072003.20-084651.2 A" +{ + OrbitBarycenter "WISE 0720-0846" + SpectralType "M9.5V" + AppMag 18.266 + + EllipticalOrbit { + Period 3.1 + SemiMajorAxis 1.34 # mass ratio 0.081:0.062 + Eccentricity 0.80 + Inclination 39.0 + AscendingNode 175.8 + ArgOfPericenter 257.4 + MeanAnomaly 203.2 + } +} + +"WISE J0720-0846 B:WISE J072003.20-084651.2 B" +{ + OrbitBarycenter "WISE 0720-0846" + SpectralType "T5.5V" + AbsMag 32 # for approximate radius in Celestia + + EllipticalOrbit { + Period 3.1 + SemiMajorAxis 1.76 # mass ratio 0.081:0.062 + Eccentricity 0.80 + Inclination 39.0 + AscendingNode 175.8 + ArgOfPericenter 77.4 + MeanAnomaly 203.2 + } +} + +"GJ 1221:LP 44-113" +{ + RA 267.03330405 + Dec 70.87664478 + Distance 20.2604 # 160.9819 +/- 0.0143 mas + SpectralType "DQ9P" + AppMag 14.15 } 71253 # Gliese 555 { - RA 218.570000 - Dec -12.519444 - Distance 20.286 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 11.32 + RA 218.57004817 + Dec -12.51956038 + Distance 20.3702 # 160.1141 +/- 0.1135 mas + SpectralType "M3.5V" + Radius 225000 # approx. for class + AppMag 11.317 } +# Distance from average of distances from Gaia DR2 parallax for A and B Barycenter 116132 "Gliese 896" { - RA 352.967500 - Dec 19.937222 - Distance 20.401 + RA 352.96797137 # mass ratio (0.34:0.13):(0.16:0.09) + Dec 19.93724591 # A: 159.7098 +/- 0.0827 mas + Distance 20.400 # B: 160.0598 +/- 0.1079 mas } Barycenter "Gliese 896 A" @@ -2000,25 +2149,25 @@ Barycenter "Gliese 896 A" OrbitBarycenter "Gliese 896" EllipticalOrbit { - Period 359 - SemiMajorAxis 15.12 # mass ratio (0.34+0.13):(0.16+0.09) - Eccentricity 0.2 - Inclination 19.6 + Period 359 + SemiMajorAxis 14.92 # mass ratio (0.34:0.13):(0.16:0.09) + Eccentricity 0.2 + Inclination 19.6 AscendingNode 138.8 ArgOfPericenter 119.1 MeanAnomaly 352.0 } } - + Barycenter "Gliese 896 B" { OrbitBarycenter "Gliese 896" EllipticalOrbit { - Period 359 - SemiMajorAxis 28.44 # mass ratio (0.34+0.13):(0.16+0.09) - Eccentricity 0.2 - Inclination 19.6 + Period 359 + SemiMajorAxis 28.0 # mass ratio (0.34:0.13):(0.16:0.09) + Eccentricity 0.2 + Inclination 19.6 AscendingNode 138.8 ArgOfPericenter 299.1 MeanAnomaly 352.0 @@ -2033,11 +2182,11 @@ Barycenter "Gliese 896 B" AppMag 10.27 EllipticalOrbit { - Period 3.5 # "of the order of a few years" - SemiMajorAxis 0.5 # mass ratio 0.34:0.13 + Period 3.5 # "of the order of a few years" + SemiMajorAxis 0.5 # mass ratio 0.34:0.13 + Inclination 20 # to match orbital plane of system + AscendingNode 140 ArgOfPericenter 180 - Inclination 20 # to match orbital plane - AscendingNode 140 # of system } } @@ -2045,15 +2194,15 @@ Barycenter "Gliese 896 B" "Gliese 896 Ab" { OrbitBarycenter "Gliese 896 A" - SpectralType "M7V" # from apparent magnitude + SpectralType "M7V" # from apparent magnitude Radius 84000 # approx. for estimated class AppMag 13.26 EllipticalOrbit { - Period 3.5 # "of the order of a few years" - SemiMajorAxis 1.2 # mass ratio 0.34:0.13 - Inclination 20 # to match orbital plane - AscendingNode 140 # of system + Period 3.5 # "of the order of a few years" + SemiMajorAxis 1.2 # mass ratio 0.34:0.13 + Inclination 20 # to match orbital plane of system + AscendingNode 140 } } @@ -2065,63 +2214,96 @@ Barycenter "Gliese 896 B" AppMag 12.21 EllipticalOrbit { - Period 4.1 # "of the order of a few years" - SemiMajorAxis 0.6 # mass ratio 0.16:0.09 + Period 4.1 # "of the order of a few years" + SemiMajorAxis 0.6 # mass ratio 0.16:0.09 + Inclination 20 # to match orbital plane of system + AscendingNode 140 ArgOfPericenter 180 - Inclination 20 # to match orbital plane - AscendingNode 140 # of system } } "Gliese 896 Bb" { OrbitBarycenter "Gliese 896 B" - SpectralType "M9V" # from apparent magnitude + SpectralType "M9V" # from apparent magnitude Radius 56000 # approx. for class AppMag 15.40 EllipticalOrbit { - Period 4.1 # "of the order of a few years" - SemiMajorAxis 1.0 # mass ratio 0.16:0.09 - Inclination 20 # to match orbital plane - AscendingNode 140 # of system + Period 4.1 # "of the order of a few years" + SemiMajorAxis 1.0 # mass ratio 0.16:0.09 + Inclination 20 # to match orbital plane of system + AscendingNode 140 } } -74995 # Wolf 562 +74995 # Gliese 581 { - RA 229.861667 - Dec -7.722222 - Distance 20.669 - SpectralType "M3.0V" + RA 229.86177972 + Dec -7.72227527 + Distance 20.5454 # 158.7492 +/- 0.0523 mas + SpectralType "M3V" Radius 270000 # approx. for class - AppMag 10.57 + AppMag 10.560 +} + +# Distance from average of distances from Gaia DR2 parallax for A and B +Barycenter "Gliese 338:ADS 7251:Struve 1321" +{ + RA 138.59887190 # mass ratio 0.60:0.60 + Dec 52.68648597 # A: 157.8796 +/- 0.0366 mas + Distance 20.658 # B: 157.8851 +/- 0.0414 mas +} + +45343 "Gliese 338 A:ADS 7251 A:Struve 1321 A" +{ + OrbitBarycenter "ADS 7251" + SpectralType "K7V" + AppMag 7.63 + + EllipticalOrbit { + Period 975 + SemiMajorAxis 51 # mass ratio 0.6:0.6 + Eccentricity 0.28 + Inclination 113 + AscendingNode 13 + ArgOfPericenter 97 + MeanAnomaly 264 + } +} + +120005 "Gliese 338 B:ADS 7251 B:Struve 1321 B" +{ + OrbitBarycenter "ADS 7251" + SpectralType "M0V" + Radius 432000 # approx. for class + AppMag 7.70 + + EllipticalOrbit { + Period 975 + SemiMajorAxis 52 # mass ratio 0.6:0.6 + Eccentricity 0.28 + Inclination 113 + AscendingNode 13 + ArgOfPericenter 277 + MeanAnomaly 264 + } } "LHS 2090:LP 368-128" { - RA 135.098333 - Dec 21.834722 - Distance 20.792 - SpectralType "M6.0V" + RA 135.09811222 + Dec 21.83469395 + Distance 20.8063 # 156.7584 +/- 0.1329 mas + SpectralType "M6.5V" Radius 105000 # approx. for class - AppMag 16.10 -} - -"LHS 337:Luyten 471-42:GJ 3737" -{ - RA 189.704583 - Dec -38.381667 - Distance 20.804 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.75 + AppMag 16.100 } Barycenter 84140 "Gliese 661:BD+45 2505" { - RA 258.032917 - Dec 45.665833 + RA 258.03296559 + Dec 45.66589325 Distance 20.865 } @@ -2130,7 +2312,7 @@ Barycenter 84140 "Gliese 661:BD+45 2505" OrbitBarycenter "Gliese 661" SpectralType "M3V" Radius 270000 # approx. for class - AppMag 9.93 + AppMag 10.02 EllipticalOrbit { Period 12.96 @@ -2148,7 +2330,7 @@ Barycenter 84140 "Gliese 661:BD+45 2505" OrbitBarycenter "Gliese 661" SpectralType "M4V" Radius 180000 # approx. for class - AppMag 10.35 + AppMag 10.25 EllipticalOrbit { Period 12.96 @@ -2161,210 +2343,371 @@ Barycenter 84140 "Gliese 661:BD+45 2505" } } -# Artigau E. et al. (2006) Discovery of the brightest T dwarf in the -# northern hemisphere." ApJ, 651, L57. -# (http://arxiv.org/abs/astro-ph/0609419) -"2MASS 0136+0933:2MASS J01365662+0933473:SIMP J013656.5+093347" +"LP 944-20" { - RA 24.235833 - Dec 9.563056 - Distance 20.874 - SpectralType "T2.5V" - AbsMag 27.5 # for approximate radius in Celestia + RA 54.89688549 + Dec -35.42878568 + Distance 20.9398 # 155.7590 +/- 0.0991 mas + SpectralType "M9.5Ve" + Radius 56000 # approx. for class + AppMag 18.69 } "Gliese 223.2:LP 658-2:HL 4" { - RA 88.790417 - Dec -4.171389 - Distance 20.901 - SpectralType "DZ9" - AppMag 14.47 + RA 88.78971006 + Dec -4.16862949 + Distance 21.0084 # 155.2501 +/- 0.0287 mas + SpectralType "DZ11" + AppMag 14.45 } -"GJ 3959:Giclas 180-60" +"2MASS 1503+2525:2MASS J15031961+2525196" { - RA 247.826667 - Dec 40.865000 - Distance 20.908 - SpectralType "M5.0V" - Radius 140000 # approx. for class - AppMag 14.76 + RA 225.83171067 + Dec 25.42215925 + Distance 21.0531 # 154.9208 +/- 1.1025 mas + SpectralType "T5.5V" + AbsMag 32 # for approximate radius in Celestia } -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) -# Mazeh, T. et al. (2001) "Studies of multiple stellar systems - IV. The -# triple-lined spectroscopic system Gliese 644" MNRAS, 325, 343. -# (http://arxiv.org/abs/astro-ph/0102451) Barycenter "Gliese 644:Wolf 630" # orbit of (AB) & C unknown { - RA 253.872083 # mass ratio (0.41+0.34+0.30):0.08 - Dec -8.340536 # - Distance 21.048 + RA 253.8717855 # mass ratio (0.4155:(0.3466:0.3143)):0.0841 + Dec -8.3405565 + Distance 21.080 } -Barycenter 82817 "Gliese 644 AB:Wolf 630 AB" +# Parallax and masses from Segransan. et al. (2000), A&A 364, 665 +# "Accurate masses of very low mass stars. III. 16 new or improved masses" +# http://adsabs.harvard.edu/abs/2000A%26A...364..665S +Barycenter 82817 "Gliese 644 A-B:Wolf 630 A-B" { - RA 253.870000 - Dec -8.336389 - Distance 21.048 + RA 253.86982326 + Dec -8.3363299 + Distance 21.070 # 154.8 +/- 0.6 mas } "V1054 Oph:Gliese 644 A:Wolf 630 A" { - OrbitBarycenter "Wolf 630 AB" + OrbitBarycenter "Gliese 644 A-B" SpectralType "M2.5V" - Radius 290000 # approx. for class - AppMag 9.72 + AppMag 9.73 - EllipticalOrbit { # fully specified orientation - Period 1.71727 - SemiMajorAxis 0.86 # mass ratio 0.45:(0.34+0.30) - Eccentricity 0.043 - Inclination 69.7 - AscendingNode 0.1 - ArgOfPericenter 224.0 - MeanAnomaly 325.6 + EllipticalOrbit { # fully specified orientation + Period 1.718 + SemiMajorAxis 0.90 # mass ratio 0.4155:(0.3466:0.3143) + Eccentricity 0.04 + Inclination 82.15 + AscendingNode 324.51 + ArgOfPericenter 236.42 + MeanAnomaly 63.52 } } Barycenter "Gliese 644 B:Wolf 630 B" { - OrbitBarycenter "Wolf 630 AB" + OrbitBarycenter "Gliese 644 A-B" - EllipticalOrbit { # fully specified orientation - Period 1.71727 - SemiMajorAxis 0.60 # mass ratio 0.45:(0.34+0.30) - Eccentricity 0.0433 - Inclination 69.7 - AscendingNode 0.1 - ArgOfPericenter 44.0 - MeanAnomaly 325.6 + EllipticalOrbit { # fully specified orientation + Period 1.718 + SemiMajorAxis 0.57 # mass ratio 0.4155:(0.3466:0.3143) + Eccentricity 0.04 + Inclination 82.15 + AscendingNode 324.51 + ArgOfPericenter 56.42 + MeanAnomaly 63.52 } } "Gliese 644 Ba:Wolf 630 Ba" { - OrbitBarycenter "Wolf 630 B" + OrbitBarycenter "Gliese 644 B" SpectralType "M3V" - Radius 270000 # approx. for class - AppMag 10.37 + AppMag 10.54 EllipticalOrbit { - Period 0.008119 # 2.965522 dy - SemiMajorAxis 0.017 # mass ratio 0.34:0.30 - Eccentricity 0.026 - Inclination 70 # orbit of Bab said to be - AscendingNode 0 # in same plane as AB + Period 0.008125 # 2.965509 d + SemiMajorAxis 0.0167 # mass ratio 0.3466:0.3143 + Eccentricity 0.02 # axis calculated from mass and period + Inclination 80.81 + AscendingNode 328.19 # assumed to be identical to A-B + ArgOfPericenter 79.87 + MeanAnomaly 164.82 } } "Gliese 644 Bb:Wolf 630 Bb" { - OrbitBarycenter "Wolf 630 B" + OrbitBarycenter "Gliese 644 B" SpectralType "M4V" - Radius 180000 # approx. for class - AppMag 10.87 + AppMag 10.63 EllipticalOrbit { - Period 0.008119 # 2.965522 dy - SemiMajorAxis 0.018 # mass ratio 0.34:0.30 - Eccentricity 0.026 - Inclination 70 # orbit of Bab said to be - AscendingNode 0 # in same plane as AB - ArgOfPericenter 180 + Period 0.008125 # 2.965509 d + SemiMajorAxis 0.0185 # mass ratio 0.3466:0.3143 + Eccentricity 0.02 # axis calculated from mass and period + Inclination 80.81 + AscendingNode 328.19 # assumed to be identical to A-B + ArgOfPericenter 259.87 + MeanAnomaly 164.82 } } +# Physical parameters from Mann et al. (2015), ApJ 804 (1), 64 +# "How to Constrain Your M Dwarf: Measuring Effective Temperature, +# Bolometric Luminosity, Mass, and Radius" +# http://iopscience.iop.org/article/10.1088/0004-637X/804/1/64/meta "Gliese 644 C:Wolf 630 C:VB 8" { - RA 253.899167 - Dec -8.394444 - Distance 21.048 + RA 253.89690059 + Dec -8.39465358 + Distance 21.2046 # 153.8139 +/- 0.1148 mas SpectralType "M7V" - Radius 84000 # approx. for class - AppMag 16.78 + AppMag 16.916 + Radius 78680 } -82809 "Gliese 643:Wolf 629" +"GL Vir:GJ 1156:Luyten 1190-34" { - RA 253.855000 - Dec -8.322500 - Distance 21.048 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.80 + RA 184.74749966 + Dec 11.12604729 + Distance 21.1094 # 154.5077 +/- 0.1108 mas + SpectralType "M4.5V" + Radius 160000 # approx. for class + AppMag 13.898 } 80459 # Gliese 625 { - RA 246.352500 - Dec 54.304167 - Distance 21.298 + RA 246.35259712 + Dec 54.30410160 + Distance 21.1144 # 154.4710 +/- 0.0273 mas SpectralType "M1.5V" Radius 324000 # approx. for class - AppMag 10.10 + AppMag 10.17 +} + +# parameters from Martin et al. (2018) +# BT-Settl model parameters from Beichman et al. (2014), ApJ 783 (2), 68 +# "WISE Y Dwarfs as Probes of the Brown Dwarf-Exoplanet Connection" +# https://iopscience.iop.org/article/10.1088/0004-637X/783/2/68/meta +"WISE 2209+2711:WISE J220905.73+271143.9" +{ + RA 332.273892 + Dec 27.195556 + Distance 21.123 # 154.41 +/- 5.67 mas + SpectralType "Y0V" + Temperature 350 + Radius 69900 + AbsMag 40 # extremely low +} + +82809 "Gliese 643:Wolf 629" +{ + RA 253.85508989 + Dec -8.32258365 + Distance 21.1901 # 153.9189 +/- 0.1310 mas + SpectralType "M3.5V" + Radius 225000 # approx. for class + AppMag 11.759 } "GJ 1128:LHS 271:Luyten 100-115" { - RA 145.693333 - Dec -68.885000 - Distance 21.311 + RA 145.69309184 + Dec -68.88500107 + Distance 21.2090 # 153.7816 +/- 0.0554 mas + SpectralType "M4.0V" + Radius 180000 # approx. for class + AppMag 12.78 +} + +# parameters from Martin et al. (2018) +"WISE 0410+1502:WISE J041022.71+150248.4" +{ + RA 62.595853 + Dec 15.044417 + Distance 21.259 # 153.42 +/- 4.05 mas + SpectralType "Y0V" + Temperature 300 # approx. + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +114622 # Gliese 892 +{ + RA 348.32072826 + Dec 57.16835459 + Distance 21.3061 # 153.0808 +/- 0.0895 mas + SpectralType "K3V" + AppMag 5.570 +} + +# BT-Settl model parameters from Beichman et al. (2014), ApJ 783 (2), 68 +# "WISE Y Dwarfs as Probes of the Brown Dwarf-Exoplanet Connection" +# https://iopscience.iop.org/article/10.1088/0004-637X/783/2/68/meta +"WISE 0313+7807:WISE J031325.94+780744.3" +{ + RA 048.358100 + Dec 78.128986 + Distance 21.3 # 153 +/- 15 mas + SpectralType "T8.5V" + Temperature 651 + Radius 61500 + AbsMag 40 # extremely low +} + +"LHS 337:Luyten 471-42:GJ 3737" +{ + RA 189.70457636 + Dec -38.38157547 + Distance 21.7666 # 149.8423 +/- 0.0755 mas SpectralType "M4.0V" Radius 180000 # approx. for class AppMag 12.74 } -"GL Vir:GJ 1156:Luyten 1190-34" +# Söderhjelm, S. (1999), A&A 341, 121 +# "Visual binary orbits and masses post Hipparcos" +# http://adsabs.harvard.edu/abs/1999A%26A...341..121S +Barycenter 72659 "XI Boo:37 Boo:Gliese 566:ADS 9413" { - RA 184.751250 - Dec 11.125278 - Distance 21.332 - SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 13.80 + RA 222.847018 + Dec 19.100634 + Distance 21.893 # 148.98 +/- 0.48 mas } -114622 # Gliese 892 +"XI Boo A:37 Boo A:Gliese 566 A:ADS 9413 A" { - RA 348.320833 - Dec 57.168333 - Distance 21.340 - SpectralType "K3V" - AppMag 5.57 + OrbitBarycenter "XI Boo" + SpectralType "G7Ve" + AppMag 4.675 + + EllipticalOrbit { + Period 151.6 + SemiMajorAxis 13.80 # mass ratio 0.94:0.67 + Eccentricity 0.51 + Inclination 83.21 + AscendingNode 270.13 + ArgOfPericenter 158.75 + MeanAnomaly 215.38 + } } -"GJ 3877:LP 914-54" +"XI Boo B:37 Boo B:Gliese 566 B:ADS 9413 B" { - RA 224.160417 - Dec -28.164167 - Distance 21.389 - SpectralType "M7.0V" - Radius 84000 # approx. for class - AppMag 17.05 + OrbitBarycenter "XI Boo" + SpectralType "K5Ve" + AppMag 6.816 + + EllipticalOrbit { + Period 151.6 + SemiMajorAxis 19.36 # mass ratio 0.94:0.67 + Eccentricity 0.51 + Inclination 83.21 + AscendingNode 270.13 + ArgOfPericenter 338.75 + MeanAnomaly 215.38 + } } 53767 # Ross 104 { - RA 165.017917 - Dec 22.833056 - Distance 21.843 - SpectralType "M2.5V" - Radius 290000 # approx. for class - AppMag 10.02 + RA 165.01773737 + Dec 22.83295740 + Distance 22.0185 # 148.1283 +/- 0.0569 mas + SpectralType "M4V" + Radius 180000 # approx. for class + AppMag 10.020 } -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) +# Tokovinin et al. (2015), AJ 150 (2), 50 +# "Speckle Interferometry at SOAR in 2014" +# http://iopscience.iop.org/article/10.1088/0004-6256/150/2/50/meta +# Delfosse et al. (1999), A&A 344, 897 +# "New neighbours. I. 13 new companions to nearby M dwarfs" +# http://adsabs.harvard.edu/abs/1999A&A...344..897D +Barycenter "GJ 3522:Giclas 41-14" +{ + RA 134.734670 + Dec 8.4739078 + Distance 22.088 # 147.66 +/- 1.98 mas +} + +Barycenter "GJ 3522 A:Giclas 41-14 A" +{ + OrbitBarycenter "Giclas 41-14" + SpectralType "M3.5V" + + EllipticalOrbit { + Period 5.566 + SemiMajorAxis 0.86 # mass ratio (0.19:0.17):0.17 + Eccentricity 0.78 + Inclination 155.71 + AscendingNode 234.28 + ArgOfPericenter 34.91 + MeanAnomaly 303.15 + } +} + +"GJ 3522 Aa:Giclas 41-14 Aa" +{ + OrbitBarycenter "Giclas 41-14 A" + SpectralType "M3.5V" + Radius 225000 # approx. for class + AppMag 11.94 + + EllipticalOrbit { + Period 0.021 # 7.6 d + SemiMajorAxis 0.0255 # estimated from mass ratio 0.19:0.17 + Inclination 156 # guess - to match + AscendingNode 234 # plane of AB + } +} + +"GJ 3522 Ab:Giclas 41-14 Ab" +{ + OrbitBarycenter "Giclas 41-14 A" + SpectralType "M6V" # from estimated mass + Radius 105000 # approx. for estimated class + AppMag 12.14 + + EllipticalOrbit { + Period 0.021 # 7.6 d + SemiMajorAxis 0.0285 # estimated from mass ratio 0.19:0.17 + Inclination 156 # guess - to match + AscendingNode 234 # plane of AB + ArgOfPericenter 180 + } +} + +"GJ 3522 B:Giclas 41-14 B" +{ + OrbitBarycenter "Giclas 41-14" + SpectralType "M6V" + Radius 105000 # approx. for estimated class + AppMag 12.28 + + EllipticalOrbit { + Period 5.566 + SemiMajorAxis 1.83 # mass ratio (0.19:0.17):0.17 + Eccentricity 0.78 + Inclination 155.71 + AscendingNode 234.28 + ArgOfPericenter 214.91 + MeanAnomaly 303.15 + } +} + +# Delfosse et al. (1999), A&A 344, 897 +# "New neighbours. I. 13 new companions to nearby M dwarfs" +# http://adsabs.harvard.edu/abs/1999A&A...344..897D Barycenter 106106 "Gliese 829:Ross 775" { - RA 322.400816 - Dec 17.642376 - Distance 21.889 + RA 322.40338336 + Dec 17.64329431 + Distance 22.0954 # 147.6126 +/- 0.0979 mas } "Gliese 829 A:Ross 775 A" @@ -2375,7 +2718,7 @@ Barycenter 106106 "Gliese 829:Ross 775" AppMag 11.05 EllipticalOrbit { - Period 0.146 # 53.2dys + Period 0.146 # 53.2 d SemiMajorAxis 0.11 # estimated from mass ratio 0.26:0.26 ArgOfPericenter 180 } @@ -2389,170 +2732,333 @@ Barycenter 106106 "Gliese 829:Ross 775" AppMag 11.05 EllipticalOrbit { - Period 0.146 # 53.2dys + Period 0.146 # 53.2 d SemiMajorAxis 0.11 # estimated from mass ratio 0.26:0.26 } } -# Kirkpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 1217+1626:WISE J1217+1626:WISEPC J121756.91+162640.2" -{ - Texture "exo-class4night.*" - RA 184.487083 - Dec 16.444444 - Distance 21.9 - SpectralType "T9.0V" - Temperature 600 - Radius 60000 # approx. - AbsMag 50 # extremely low -} - -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) -Barycenter "GJ 3522:Giclas 41-14" -{ - RA 134.734583 - Dec 8.473889 - Distance 22.089 -} - -Barycenter "GJ 3522 A:Giclas 41-14 A" -{ - OrbitBarycenter "Giclas 41-14" - - EllipticalOrbit { - Period 11.8 # estimate - SemiMajorAxis 1.3 # from AB separation and mass ratio (0.19+0.17):0.17 - } -} - -"GJ 3522 Aa:Giclas 41-14 Aa" -{ - OrbitBarycenter "Giclas 41-14 A" - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.94 - - EllipticalOrbit { - Period 0.021 # 7.6dys - SemiMajorAxis 0.0255 # estimated from mass ratio 0.19:0.17 - } -} - -"GJ 3522 Ab:Giclas 41-14 Ab" -{ - OrbitBarycenter "Giclas 41-14 A" - SpectralType "M6V" # from estimated mass - Radius 105000 # approx. for estimated class - AppMag 12.14 - - EllipticalOrbit { - Period 0.021 # 7.6dys - SemiMajorAxis 0.0285 # estimated from mass ratio 0.19:0.17 - ArgOfPericenter 180 - } -} - -"GJ 3522 B:Giclas 41-14 B" -{ - OrbitBarycenter "Giclas 41-14" - SpectralType "M6V" # from mass - Radius 105000 # approx. for estimated class - AppMag 12.28 - - EllipticalOrbit { - Period 11.8 # estimate - SemiMajorAxis 2.9 # from AB separation and mass ratio (0.19+0.17):0.17 - ArgOfPericenter 180 - } -} - -Barycenter 72659 "XI Boo:37 Boo:Gliese 566:ADS 9413" -{ - RA 222.847018 - Dec 19.100634 - Distance 22.102 -} - -"XI Boo A:37 Boo A:Gliese 566 A:ADS 9413 A" -{ - OrbitBarycenter "XI Boo" - SpectralType "G7V" - AppMag 4.67 - - EllipticalOrbit { - Period 151.6 - SemiMajorAxis 13.93 # mass ratio 0.94:0.67 - Eccentricity 0.51 - Inclination 83.21 - AscendingNode 270.13 - ArgOfPericenter 158.75 - MeanAnomaly 215.38 - } -} - -"XI Boo B:37 Boo B:Gliese 566 B:ADS 9413 B" -{ - OrbitBarycenter "XI Boo" - SpectralType "K4V" - AppMag 6.94 - - EllipticalOrbit { - Period 151.6 - SemiMajorAxis 19.55 # mass ratio 0.94:0.67 - Eccentricity 0.51 - Inclination 83.21 - AscendingNode 270.13 - ArgOfPericenter 338.75 - MeanAnomaly 215.38 - } -} - -53020 # Wolf 358 -{ - RA 162.718892 - Dec 6.810118 - Distance 22.165 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 11.65 -} - 113296 # Ross 671 { - RA 344.147643 - Dec 16.554122 - Distance 22.284 - SpectralType "M1.5V" + RA 344.14501970 + Dec 16.55343159 + Distance 22.3992 # 145.6107 +/- 0.0388 mas + SpectralType "M1.5Ve" Radius 324000 # approx. for class - AppMag 8.65 + AppMag 8.638 +} + +# Used parallax of component B, from Gaia DR2 +# Winters et al. (2019), eprint arXiv 1906.10147 +# "Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple +# M Dwarf System at 6.9 Parsecs" +# https://arxiv.org/abs/1906.10147 +Barycenter 14101 "LTT 1445" +{ + RA 45.46325875 # mass ratio 0.257:(0.215:0.161) + Dec -16.59253611 + Distance 22.4090 +} + +1006945865 "LTT 1445 A:GJ 3193:LP 771-96:Luyten 730-18:RECONS 4" +{ + RA 45.46412500 + Dec -16.5933611 + Distance 22.4090 + AppMag 11.22 + SpectralType "M3V" + Radius 186400 +} + +Barycenter "LTT 1445 BC:GJ 3192:LP 771-95" +{ + RA 45.462666667 + Dec -16.59197222 + Distance 22.4090 +} + +"LTT 1445 B:GJ 3192 A:LP 771-95 A" +{ + OrbitBarycenter "LTT 1445 BC" + SpectralType "M4V" # estimate from mass and radius + AppMag 11.78 + Radius 164200 + + EllipticalOrbit { + Period 36.2 + SemiMajorAxis 3.4096 # mass ratio 0.215:0.161 + Eccentricity 0.50 + Inclination 70.41 + AscendingNode 204.85 + ArgOfPericenter 333.35 + MeanAnomaly 169.06 + } +} + +"LTT 1445 C:GJ 3192 B:LP 771-95 B" +{ + OrbitBarycenter "LTT 1445 BC" + SpectralType "M4V" # estimate from mass and radius + AppMag 12.64 + Radius 137100 + + EllipticalOrbit { + Period 36.2 + SemiMajorAxis 4.5532 # mass ratio 0.215:0.161 + Eccentricity 0.50 + Inclination 70.41 + AscendingNode 204.85 + ArgOfPericenter 153.35 + MeanAnomaly 169.06 + } } "Gliese 299:Ross 619" { - RA 122.989583 - Dec 8.774444 - Distance 22.294 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.82 + RA 122.98983156 + Dec 8.77305088 + Distance 22.4200 # 145.4757 +/- 0.5695 mas + SpectralType "M4.5V" + Radius 160000 # approx. for class + AppMag 12.834 } +# parameters from Martin et al. (2018) +"WISE 1405+5534:WISE J140518.39+553421.3" +{ + RA 211.322480 + Dec 55.572793 + Distance 22.59 # 144.35 +/- 8.60 mas + SpectralType "Y0V" + Temperature 400 # guess + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +53020 # Wolf 358 +{ + RA 162.71679684 + Dec 6.80812877 + Distance 22.7291 # 143.4971 +/- 0.0626 mas + SpectralType "M4V" + Radius 180000 # approx. for class + AppMag 11.675 +} + +Modify 51317 # Gliese 393 +{ + Radius 305000 # approx. for class +} + +"2MASS 2146+3813:2MASS J21462206+3813047" +{ + RA 326.59196805 + Dec 38.21804860 + Distance 22.9603 # 142.0522 +/- 0.0513 mas + SpectralType "M5V" + Radius 140000 # approx. for class + AppMag 12.210 +} + +Modify 103096 # Gliese 809 +{ + Radius 341000 # approx. for class +} + +"GJ 3877:LP 914-54" +{ + RA 224.15943498 + Dec -28.16350623 + Distance 23.0196 # 141.6865 +/- 0.1063 mas + SpectralType "M7.0V" + Radius 84000 # approx. for class + AppMag 17.141 +} + +"GJ 1068:Luyten 230-188" +{ + RA 62.61718071 + Dec -53.60226063 + Distance 23.2047 # 140.5559 +/- 0.0354 mas + SpectralType "M4.5V" + Radius 160000 # approx. for class + AppMag 13.58 +} + +"GJ 1286" +{ + RA 353.79359235 + Dec -2.38905966 + Distance 23.4122 # 139.3100 +/- 0.1066 mas + SpectralType "M5.0V" + Radius 140000 # approx. for class + AppMag 14.69 +} + +# parameters from Martin et al. (2018) +"WISE 0825+2805:WISE J082507.35+280548.5" +{ + RA 126.280554 + Dec 28.096545 + Distance 23.461 # 139.02 ± 4.33 mas + SpectralType "Y0.5V" + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +# low-quality parallax from Theissen, C. A. (2018), ApJ 862 (2), 173 +# "Parallaxes of Cool Objects with WISE: Filling in for Gaia" +# http://iopscience.iop.org/article/10.3847/1538-4357/aaccfa/meta +"WISE 0254+0223:WISE J025409.51+022358.6" +{ + RA 43.5328583 + Dec 2.3989861 + Distance 23.5 # 139 +/- 40 mas + SpectralType "T8V" + Temperature 500 # approx. + Radius 60000 # approx. + AbsMag 40 # extremely low +} + +"V488 Hya:2MASS J08354256-0819237" +{ + RA 353.79359235 + Dec -2.38905967 + Distance 23.5305 # 138.6098 +/- 0.2781 mas + SpectralType "L6.5V" + AbsMag 21.5 # for approximate radius in Celestia +} + +# Distance from average of distances from Gaia DR2 parallax for A and B +Barycenter "Gliese 105" # orbit of (AB) and C unknown +{ + RA 39.027432618 # mass ratio ((0.81:0.08):0.17):0.21 + Dec 6.884370406 # A: 138.2084 +/- 0.1436 mas + Distance 23.577 # B: 138.4637 +/- 0.0886 mas +} + +Barycenter 12114 "Gliese 105 A-B" +{ + RA 39.020265166 # mass ratio (0.81:0.08):0.17 + Dec 6.886891351 + Distance 23.599 # 138.2084 +/- 0.1436 mas +} + +Barycenter "Gliese 105 A" +{ + OrbitBarycenter "Gliese 105" + + EllipticalOrbit { + Period 201 + SemiMajorAxis 6.1 # mass ratio (0.81:0.08):0.17 + Eccentricity 0.4 + Inclination 132.2 + AscendingNode 6.4 + ArgOfPericenter 277.2 + MeanAnomaly 351.0 + } +} + +"Gliese 105 Aa" +{ + OrbitBarycenter "Gliese 105 A" + SpectralType "K3V" + AppMag 5.81 + + EllipticalOrbit { + Period 61 + SemiMajorAxis 0.11 # mass ratio 0.81:0.08 + Eccentricity 0.67 + Inclination 61 + AscendingNode 356 + ArgOfPericenter 174 + MeanAnomaly 354 + } +} + +"Gliese 105 Ab" +{ + OrbitBarycenter "Gliese 105 A" + SpectralType "M7.5V" + AppMag 16.90 + + EllipticalOrbit { + Period 61 + SemiMajorAxis 1.13 # mass ratio 0.81:0.08 + Eccentricity 0.67 + Inclination 61 + AscendingNode 356 + ArgOfPericenter 354 + MeanAnomaly 354 + } +} + +# Spectral type from same source as orbit; mass and magnitude estimated +# from spectral type +"Gliese 105 B" +{ + OrbitBarycenter "Gliese 105" + SpectralType "M4.5V" + AbsMag 12.6 # guess from spectral type + + EllipticalOrbit { + Period 201 + SemiMajorAxis 32.2 # mass ratio (0.81:0.08):0.17 + Eccentricity 0.4 + Inclination 132.2 + AscendingNode 6.4 + ArgOfPericenter 97.2 + MeanAnomaly 351.0 + } +} + +"BX Cet:Gliese 105 C" # SIMBAD calls it GJ 105 B +{ + RA 39.06361119 + Dec 6.87164564 + Distance 23.555 # parallax: 138.4637 +/- 0.0886 mas + AppMag 11.664 + SpectralType "M3.5V" + Radius 225000 # approx. for class +} + +# parameters from Martin et al. (2018) +# BT-Settl model parameters from Beichman et al. (2014), ApJ 783 (2), 68 +# "WISE Y Dwarfs as Probes of the Brown Dwarf-Exoplanet Connection" +# https://iopscience.iop.org/article/10.1088/0004-637X/783/2/68/meta +"WISE 2056+1459:WISE J205628.91+145953.2" +{ + RA 314.120498 + Dec 14.998118 + Distance 23.580 # 138.32 +/- 3.86 mas + SpectralType "Y0V" + Temperature 407 + Radius 65000 + AbsMag 40 # extremely low +} + +"GJ 4274:Luyten 788-34" +{ + RA 335.77915456 + Dec -17.60731501 + Distance 23.6040 # 138.1782 +/- 0.2484 mas + SpectralType "M4.5Ve" + Radius 160000 # approx. for class + AppMag 13.30 +} + +# Used parallax of component C from Gaia DR2 Barycenter "Gliese 667:CD-34 11626" # orbit of (AB) & C unknown { - RA 259.735861 # mass ratio (0.68+0.59):0.35 - Dec -34.990567 # - Distance 22.296 + RA 259.7396833 # mass ratio (0.68:0.59):0.35 + Dec -34.99129014 + Distance 23.6316 } Barycenter 84709 "Gliese 667 AB:CD-34 11626 AB" { - RA 259.734835 - Dec -34.989574 - Distance 22.296 + RA 259.7381868 + Dec -34.9897615 + Distance 23.6316 # 138.0171 +/- 0.0918 mas } "Gliese 667 A:CD-34 11626 A" @@ -2563,7 +3069,7 @@ Barycenter 84709 "Gliese 667 AB:CD-34 11626 AB" EllipticalOrbit { Period 42.15 - SemiMajorAxis 5.75 # mass ratio 0.68:0.59 + SemiMajorAxis 5.98 # mass ratio 0.68:0.59 Eccentricity 0.58 Inclination 136.65 AscendingNode 305.37 @@ -2580,7 +3086,7 @@ Barycenter 84709 "Gliese 667 AB:CD-34 11626 AB" EllipticalOrbit { Period 42.15 - SemiMajorAxis 6.62 # mass ratio 0.68:0.59 + SemiMajorAxis 7.13 # mass ratio 0.68:0.59 Eccentricity 0.58 Inclination 136.65 AscendingNode 305.37 @@ -2591,308 +3097,55 @@ Barycenter 84709 "Gliese 667 AB:CD-34 11626 AB" "Gliese 667 C:CD-34 11626 C" { - RA 259.739583 - Dec -34.994167 - Distance 22.296 + RA 259.74511327 + Dec -34.99683693 + Distance 23.6316 SpectralType "M1.5V" Radius 324000 # approx. for class - AppMag 10.26 + AppMag 10.22 } -14101 "GJ 3192:LP 771-95 A:Luyten 730-18:RECONS 4" +"WISE 0607+2429:WISE 0607+2429:WISEP J060738.65+242953.4" { - RA 45.46411209 - Dec -16.593372777 - Distance 22.680 - SpectralType "M2.5V" - Radius 290000 # approx. for class - AppMag 11.22 + RA 91.91259273 + Dec 24.49911608 + Distance 23.8166 # 136.9449 +/- 0.6553 mas + SpectralType "L9V" + AbsMag 23 # approx. for radius in Celestia } -"GJ 3193:LP 771-95 B:LP 771-96" +# parameters from Martin et al. (2018) +# BT-Settl model parameters from Beichman et al. (2014), ApJ 783 (2), 68 +# "WISE Y Dwarfs as Probes of the Brown Dwarf-Exoplanet Connection" +# https://iopscience.iop.org/article/10.1088/0004-637X/783/2/68/meta +"WISE 1738+2732:WISE J173835.53+273259.0" { - RA 45.46547306 - Dec -16.59479288 - Distance 22.680 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.79 + RA 264.648060 + Dec 27.549749 + Distance 23.936 # 136.26 +/- 4.27 mas + SpectralType "Y0V" + Temperature 409 + Radius 64300 + AbsMag 40 # extremely low } -"LP 771-95 C" -{ - RA 45.46432292 - Dec -16.59359277 - Distance 22.680 - SpectralType "M5V" - Radius 140000 # approx. for class - AppMag 12.65 -} - -# ============================================================= -# Additional stars between end of RECONS Top 100 and 25 ly: -# Non-Hipparcos and Hip stars with additional definitions - -# Jao et al. (2005) The Solar Neighborhood XIII: Parallax Results -# from the CTIOPI 0.9-m Program -- Stars with mu >= 1"/year -# (MOTION Sample) -# http://arxiv.org/abs/astro-ph/0502167 -"GJ 1068:Luyten 230-188" -{ - RA 62.617083 - Dec -53.602222 - Distance 22.742 - SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 13.62 -} - -# Bergfors et al. (2010) Lucky Imaging survey for southern M -# dwarf binaries -# http://arxiv.org/abs/1006.2377 -Barycenter "LP 993-115 A:Luyten 369-44:2MASS J02451431-4344102" # orbit of Aa&Ab unknown, mass ratio ~1:1 -{ - RA 41.309583 - Dec -43.736111 - Distance 22.8 -} - -"LP 993-115 Aa:Luyten 369-44 A:2MASS J02451431-4344102 A" -{ - RA 41.309583 - Dec -43.7361467 # separation 1.8AU - Distance 22.8 - SpectralType "M4.0V" - Radius 180000 # approx. for class - AppMag 12.67 -} - -"LP 993-115 Ab:Luyten 369-44 B:2MASS J02451431-4344102 B" -{ - RA 41.309583 - Dec -43.7360753 # separation 1.8AU - Distance 22.8 - SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 12.7 # estimate -} - -Barycenter "LP 993-115" # orbit of AB unknown, mass ratio ~2:1 -{ - RA 41.304583 - Dec -43.738148 - Distance 22.8 -} - -"LP 993-115 B:2MASS J02451070-4344319" -{ - RA 41.294583 - Dec -43.742222 - Distance 22.8 - SpectralType "M5V" - Radius 140000 # approx. for class - AppMag 12.2 -} - -Modify 103096 # Gliese 809 -{ - Radius 305000 # approx. for class -} - -Modify 51317 # Gliese 393 -{ - Radius 305000 # approx. for class -} - -"Gliese 293:Luyten 97-12" -{ - RA 118.311250 - Dec -67.791944 - Distance 23.099 - SpectralType "DQ9" - AppMag 14.08 -} - -# Shkolnik, Liu & Reid (2009) Identifying the Young Low-mass -# Stars within 25 pc. I. Spectroscopic Observations. -# http://arxiv.org/abs/0904.3323 -"Giclas 227-22:LP 71-82" -{ - RA 270.569167 - Dec 4.262500 - Distance 23.2 - SpectralType "M6.1V" - Radius 105000 # approx. for class - AppMag 13.51 -} - -Barycenter 12114 "Gliese 105" # orbit of A & B unknown -{ - RA 39.023977 # mass ratio (0.81+0.08):0.21 - Dec 6.880494 # - Distance 23.420 -} - -Barycenter "Gliese 105 A" -{ - RA 39.015969 - Dec 6.883364 - Distance 23.420 -} - -"Gliese 105 Aa" -{ - OrbitBarycenter "Gliese 105 A" - SpectralType "K3V" - AppMag 5.81 - - EllipticalOrbit { - Period 61 - SemiMajorAxis 1.3 # mass ratio 0.81:0.08 - Eccentricity 0.67 - Inclination 61 - AscendingNode 356 - ArgOfPericenter 354 - MeanAnomaly 354 - } -} - -"Gliese 105 Ab" -{ - OrbitBarycenter "Gliese 105 A" - SpectralType "M7.5V" - Radius 80000 # approx. for class - AppMag 16.90 - - EllipticalOrbit { - Period 61 - SemiMajorAxis 13.6 # mass ratio 0.81:0.08 - Eccentricity 0.67 - Inclination 61 - AscendingNode 356 - ArgOfPericenter 174 - MeanAnomaly 354 - } -} - -"BX Cet:Gliese 105 B" -{ - RA 39.057917 - Dec 6.868333 - Distance 23.420 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.66 -} - -"GJ 1286" -{ - RA 353.794583 - Dec -2.390278 - Distance 23.584 - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 14.67 -} - -1016993109 "GJ 4063:LP 229-17" -{ - RA 278.652500 - Dec 40.123889 - Distance 23.635 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.75 -} - -"GJ 4053:LP 71-165" -{ - RA 274.740417 - Dec 66.192222 - Distance 23.721 - SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 13.49 -} - -# Henry et al. (2006) The solar neighborhood XVII parallax -# results from the CTIOPI 0.9 m program: 20 new members of the -# RECONS 10 parsec sample. AJ, 132, 2360-71. -# http://iopscience.iop.org/1538-3881/132/6/2360/pdf/1538-3881_132_6_2360.pdf -Barycenter 5496 "Gliese 54:Luyten 87-59" -{ - RA 17.595417 - Dec -67.445000 - Distance 23.874 -} - -# Goldin & Makarov (2007) Astrometric orbits for Hipparcos -# stochastic binaries. AJ Supplement Series, 173, 137-42. -# http://iopscience.iop.org/0067-0049/173/1/137/fulltext/71924.text.html -"Gliese 54 A:Luyten 87-59 A" -{ - OrbitBarycenter "Gliese 54" - SpectralType "M2.0V" - Radius 305000 # approx. for class - AppMag 10.17 # sum 9.82, diff 1.04 - - EllipticalOrbit { - Period 1.169 - SemiMajorAxis 0.40 # mass ratio 0.83 - Eccentricity 0.41 - Inclination 94 - AscendingNode 92 - ArgOfPericenter 123 - } -} - -"Gliese 54 B:Luyten 87-59 B" -{ - OrbitBarycenter "Gliese 54" - SpectralType "M3.0V" - Radius 270000 # approx. for class - AppMag 11.21 # sum 9.82, diff 1.04 - - EllipticalOrbit { - Period 1.169 - SemiMajorAxis 0.48 # mass ratio 0.83 - Eccentricity 0.41 - Inclination 94 - AscendingNode 92 - ArgOfPericenter 303 - } -} - -# Dahn, C.C. et al. (2002) "Astrometry and photometry -# for cool dwarfs and brown dwarfs." AJ, 124, 1170 -# (http://www.iop.org/EJ/abstract/-link=10023955/1538-3881/124/2/1170) "2MASS 1507-1627:2MASS J15074769-1627386" { - RA 226.948709 - Dec -16.460722 - Distance 23.912 + RA 226.94864865 + Dec -16.46114400 + Distance 24.1180 # 135.2332 +/- 0.3274 mas SpectralType "L5V" AbsMag 21 # for approximate radius in Celestia } -"GJ 4274:Luyten 788-34" -{ - RA 335.777500 - Dec -17.606944 - Distance 24.268 - SpectralType "M4.5V" - Radius 160000 # approx. for class - AppMag 13.26 -} - -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) +# Delfosse et al. (1999), A&A 344, 897 +# "New neighbours. I. 13 new companions to nearby M dwarfs" +# http://adsabs.harvard.edu/abs/1999A&A...344..897D Barycenter 83945 "GJ 3991:Giclas 203-47" { - RA 257.380309 - Dec 43.682026 - Distance 24.284 + RA 257.38142860 + Dec 43.68131523 + Distance 24.2320 # 134.5971 +/- 0.4894 mas } "GJ 3991 A:Giclas 203-47 A" @@ -2903,7 +3156,7 @@ Barycenter 83945 "GJ 3991:Giclas 203-47" AppMag 11.80 EllipticalOrbit { - Period 0.04 # 15 days + Period 0.04 # 15 d SemiMajorAxis 0.6 # estimated from mass ratio 0.3:0.5 Eccentricity 0.07 ArgOfPericenter 180 @@ -2912,55 +3165,60 @@ Barycenter 83945 "GJ 3991:Giclas 203-47" "GJ 3991 B:Giclas 203-47 B" { - OrbitBarycenter "Giclas 203-47" SpectralType "D" AbsMag 13.7 # for a 0.5-solar-mass white dwarf EllipticalOrbit { - Period 0.04 # 15 days + Period 0.04 # 15 d SemiMajorAxis 0.4 # estimated from mass ratio 0.3:0.5 Eccentricity 0.07 } } -# Henry et al. (2006) The solar neighborhood XVII parallax -# results from the CTIOPI 0.9 m program: 20 new members of the -# RECONS 10 parsec sample. AJ, 132, 2360-71. +3765 # HD 4628 +{ + RA 12.09573477 + Dec 5.28061376 + Distance 24.2497 # 134.4990 +/- 0.0890 mas + SpectralType "K2.5V" + AppMag 5.74 +} + +# apparent magnitude from Henry et al. (2006) AJ 132 (6), 2360 +# "The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: +# 20 New Members of the RECONS 10 Parsec Sample" # http://iopscience.iop.org/1538-3881/132/6/2360/pdf/1538-3881_132_6_2360.pdf -"GJ 4248:LHS 3746:Luyten 499-46" { - RA 330.622500 - Dec -37.080833 - Distance 24.288 +"GJ 4248:LHS 3746:Luyten 499-46" +{ + RA 330.6223980 + Dec -37.0809310 + Distance 24.287 # 134.29 +/- 1.31 mas SpectralType "M3.0V" Radius 270000 # approx. for class - AppMag 11.80 + AppMag 11.76 } -Modify 12781 # Gliese 109 +Modify 106255 # Wolf 922 { - Radius 225000 # approx. for class -} - - -"GJ 1224" -{ - RA 271.887083 - Dec -15.964167 - Distance 24.598 - SpectralType "M4.5V" Radius 160000 # approx. for class - AppMag 13.61 } -# Drummond JD, Christou JC, Fugate RQ. Full adaptive optics images of -# ADS 9731 and mu Cassiopeiae: Orbits and masses. ApJ 1995; 450: 380-91 -# http://cdsads.u-strasbg.fr//full/1995ApJ...450..380D/0000380.000.html +2021 # Bet Hyi +{ + RA 6.43779316 + Dec -77.25424612 + Distance 24.327 # 134.07 +/- 0.11 mas + SpectralType "G0V" + AppMag 2.79 +} + +# Masses from same source as orbit Barycenter 5336 "MU Cas:30 Cas:Gliese 53" { - RA 17.053838 - Dec 54.924228 - Distance 24.638 + RA 17.06831127 + Dec 54.92034067 + Distance 24.638 # 132.38 +/- 0.82 mas } "MU Cas A:30 Cas A:Gliese 53 A" @@ -2969,11 +3227,11 @@ Barycenter 5336 "MU Cas:30 Cas:Gliese 53" SpectralType "G5VI" AppMag 5.17 - EllipticalOrbit { # fully specified orientation - Period 21.753 - SemiMajorAxis 1.437 # mass ratio 0.742:0.173 + EllipticalOrbit { # fully specified orientation + Period 21.753 + SemiMajorAxis 1.437 # mass ratio 0.742:0.173 Eccentricity 0.561 - Inclination 28.0 + Inclination 28.0 AscendingNode 334.7 ArgOfPericenter 135.0 MeanAnomaly 41.52 @@ -2986,60 +3244,27 @@ Barycenter 5336 "MU Cas:30 Cas:Gliese 53" SpectralType "MVI" AppMag 11.00 - EllipticalOrbit { # fully specified orientation - Period 21.753 - SemiMajorAxis 6.165 # mass ratio 0.742:0.173 + EllipticalOrbit { # fully specified orientation + Period 21.753 + SemiMajorAxis 6.165 # mass ratio 0.742:0.173 Eccentricity 0.561 - Inclination 28.0 + Inclination 28.0 AscendingNode 334.7 ArgOfPericenter 315.0 MeanAnomaly 41.52 } } -"GJ 3378:Luyten 1813-21" +7981 # 107 Psc { - RA 90.290417 - Dec 59.598333 - Distance 24.691 - SpectralType "M3.5V" - Radius 225000 # approx. for class - AppMag 11.71 + RA 25.62401456 + Dec 20.26851674 + Distance 24.8046 # 131.4903 +/- 0.1515 mas + SpectralType "K1V" + AppMag 5.24 } -Modify 65859 # Ross 490 -{ - Radius 341000 # approx. for class -} - -Modify 91262 # Vega  -{ - SemiAxes [ 1 0.81 1 ] # equatorial radius 23% greater than polar - - UniformRotation - { - Period 12.4 - Inclination 28 # rotation pole points - AscendingNode 15 # towards solar system - } -} - -# Kirpatrick et al. (2011) The First Hundred Brown Dwarfs -# Discovered by the Wide-field Infrared Survey Explorer (WISE) -# http://arxiv.org/abs/1108.4677 -"WISE 2056+1459:WISE J2046+1459:WISEPC J205628.90+145953.3" -{ - Texture "exo-class4night.*" - RA 314.120417 - Dec 14.998056 - Distance 25.1 - SpectralType "T9.5" # actually Y0 - Temperature 350 - Radius 70000 - AbsMag 50 # extremely low -} - -Modify 113368 # Fomalhaut  +Modify 113368 # Fomalhaut { UniformRotation { @@ -3049,165 +3274,95 @@ Modify 113368 # Fomalhaut } } -# Seifahrt, A et al. Improved orbital solution and masses for the -# very low-mass multiple system LHS 1070. A&A 2008; 484: 429-34 -# http://arxiv.org/pdf/0803.0628v2.pdf -Barycenter "GJ 2005:LHS 1070" +113283 # TW PsA (Fomalhaut B) { - RA 6.184167 - Dec -27.140000 - Distance 25.186 + RA 344.10022206 + Dec -31.56556530 + Distance 24.8144 # 131.4380 +/- 0.0856 mas + SpectralType "K4Ve" + AppMag 6.48 } -"GJ 2005 A:LHS 1070 A" +Modify 65859 # Ross 490 { - OrbitBarycenter "GJ 2005" - SpectralType "M5.5V" - Radius 122000 # approx. for class - AppMag 15.61 - - EllipticalOrbit { - Period 82 - SemiMajorAxis 7.0 # mass ratio 0.157:0.115 - Eccentricity 0.01 - Inclination 44 - AscendingNode 342 - ArgOfPericenter 45 - MeanAnomaly 10 # approx. - } + Radius 341000 # approx. for class } -Barycenter "GJ 2005 BC:LHS 1070 BC" +"G 141-36" { - OrbitBarycenter "GJ 2005" - - EllipticalOrbit { - Period 82 - SemiMajorAxis 5.2 # mass ratio 0.157:0.115 - Eccentricity 0.01 - Inclination 44 - AscendingNode 342 - ArgOfPericenter 225 - MeanAnomaly 10 # approx. - } -} - -"GJ 2005 B:LHS 1070 B" -{ - OrbitBarycenter "GJ 2005 BC" - SpectralType "M8.5V" - Radius 66000 # approx. for class - AppMag 18.07 - - EllipticalOrbit { - Period 17.015031 # period 6214.74 dy - SemiMajorAxis 1.78 # mass ratio ~1:1 - Eccentricity 0.034 - Inclination 43.34 - AscendingNode 341.84 - ArgOfPericenter 138.79 - MeanAnomaly 187.55 - } -} - -"GJ 2005 C:LHS 1070 C" -{ - OrbitBarycenter "GJ 2005 BC" - SpectralType "M9.2V" - Radius 56000 # approx. for class - AppMag 18.89 - - EllipticalOrbit { - Period 17.015031 # period 6214.74 dy - SemiMajorAxis 1.79 # mass ratio ~1:1 - Eccentricity 0.034 - Inclination 43.34 - AscendingNode 341.84 - ArgOfPericenter 318.79 - MeanAnomaly 187.55 - } -} - -"Gliese 102:Luyten 1305-10" -{ - RA 38.405000 - Dec 24.927500 - Distance 25.284 - SpectralType "M4V" - Radius 180000 # approx. for class - AppMag 12.96 -} - -Modify 88574 # Luyten 991-14 -{ - Radius 305000 # approx. for class -} - -"GJ 1093:LHS 223" -{ - RA 104.869583 - Dec 19.349444 - Distance 25.323 + RA 282.07307098 + Dec -7.68921596 + Distance 24.8596 # 131.1990 +/- 0.0788 mas SpectralType "M5.0V" Radius 140000 # approx. for class - AppMag 14.83 + AppMag 14.248 } -Modify 61874 # Gliese 480.1 +"GJ 4053:LP 71-165" { - Radius 180000 # approx. for class + RA 274.73846839 + Dec 66.19258373 + Distance 24.9408 # 130.7722 +/- 0.0443 mas + SpectralType "M4.5V" + Radius 160000 # approx. for class + AppMag 13.406 } -# Deacon NR, Hambly NC, Cooke JA. Southern Infrared Proper Motion -# Survey I: Discovery of New High Proper Motion Stars From First -# Full Hemisphere Scan. 2004. -# http://arxiv.org/abs/astro-ph/0412127 -# RECONS revised original distance outwards from 11.8ly -# (http://en.allexperts.com/q/Astronomy-1360/2008/1/SIPS-1259-4336.htm) -"SIPS 1259-4336:SIPS J1259-4336:2MASS 1259-4336:2MASS J12590470-4336243" +"Fomalhaut C:ALF PsA C:LP 876-10" { - RA 194.770000 - Dec -43.606667 - Distance 25.40 - SpectralType "M8.5V" - Radius 66000 # approx. for class - AbsMag 17.5 # approx. + RA 342.01871887 + Dec -24.36881191 + Distance 25.0305 # 130.3032 +/- 0.0746 mas + SpectralType "M4.0Ve" + Radius 160000 # approx. for class + AppMag 12.624 } -# Castro & Gizis (2011) Discovery of a Late L Dwarf: -# WISEP J060738.65+242953.4 -# http://arxiv.org/abs/1110.4351 -"WISE 0607+2429:WISE 0607+2429:WISEP J060738.65+242953.4" +Modify 91262 # Vega { - RA 91.910833 - Dec 24.498056 - Distance 25.5 - SpectralType "L8.0V" - AbsMag 23 # approx. for radius in Celestia + SemiAxes [ 1 0.80 1 ] # equatorial radius 25% greater than polar + + UniformRotation + { + Period 12.4 + # Inclination 28 # rotation pole points + # AscendingNode 15 # towards solar system + Inclination 147.35 # inclination (i) = 4.54 + AscendingNode 192.95 # inclination (i) = 8.6 + } +} + +Modify 12781 # Gliese 109 +{ + Radius 225000 # approx. for class } #======================================================================== # Nearby multiple star with poor Hipparcos parallax +# Used Gaia DR2 parallax for B Barycenter 55203 "Alula Australis:XI UMa:53 UMa:Gliese 423:ADS 8119" { - RA 169.54545 - Dec 31.529134 - Distance 27.294 + RA 169.545550 + Dec 31.529289 + Distance 28.4885 # 114.4867 +/- 0.4316 mas } +# Masses from Fuhrmann et al. (2016), MNRAS 459 (2), 1682 +# "Evidence for very nearby hidden white dwarfs" +# https://doi.org/10.1093/mnras/stw760 Barycenter "Alula Australis A:XI UMa A:53 UMa A:Gliese 423 A:ADS 8119 A" { OrbitBarycenter "Alula Australis" - EllipticalOrbit { # fully specified orientation - Period 59.878 - SemiMajorAxis 9.30 # mass ratio (1.05+0.4):(1.05+0.08) - Eccentricity 0.398 - Inclination 14.09 - AscendingNode 192.13 - ArgOfPericenter 9.69 - MeanAnomaly 29.62 + EllipticalOrbit { # fully specified orientation + Period 59.88 + SemiMajorAxis 9.65 # mass ratio (0.98:0.38):(0.88:0.17) + Eccentricity 0.40 + Inclination 14.09 + AscendingNode 192.13 + ArgOfPericenter 9.70 + MeanAnomaly 29.62 } } @@ -3215,14 +3370,14 @@ Barycenter "Alula Australis B:XI UMa B:53 UMa B:Gliese 423 B:ADS 8119 B" { OrbitBarycenter "Alula Australis" - EllipticalOrbit { # fully specified orientation - Period 59.878 - SemiMajorAxis 11.93 # mass ratio (1.05+0.4):(1.05+0.08) - Eccentricity 0.398 - Inclination 14.09 + EllipticalOrbit { # fully specified orientation + Period 59.88 + SemiMajorAxis 12.50 # mass ratio (0.98:0.38):(0.88:0.17) + Eccentricity 0.40 + Inclination 14.09 AscendingNode 192.13 - ArgOfPericenter 189.69 - MeanAnomaly 29.62 + ArgOfPericenter 189.70 + MeanAnomaly 29.62 } } @@ -3232,31 +3387,31 @@ Barycenter "Alula Australis B:XI UMa B:53 UMa B:Gliese 423 B:ADS 8119 B" SpectralType "G0V" AppMag 4.33 - EllipticalOrbit { # fully specified orientation - Period 1.832 - SemiMajorAxis 0.13 # mass ratio 1.05:0.4 - Eccentricity 0.53 - Inclination 137.0 - AscendingNode 298.1 - ArgOfPericenter 187.9 - MeanAnomaly 133.8 + EllipticalOrbit { # fully specified orientation + Period 1.834 + SemiMajorAxis 0.13 # mass ratio 0.98:0.38 + Eccentricity 0.61 + Inclination 146.3 + AscendingNode 203.8 + ArgOfPericenter 285.2 + MeanAnomaly 73.4 } } -"Alula Australis Ab:XI UMa Ab:53 UMa Ab:Gliese 423 Ab" +"Alula Australis Ab:XI UMa Ab:53 UMa Ab" { OrbitBarycenter "Alula Australis A" - SpectralType "M2V" # from estimated mass of 0.4 - AbsMag 9.3 # for estimated spectral class + SpectralType "M2V" # from mass estimate of 0.38 + AbsMag 10.3 # for estimated spectral class - EllipticalOrbit { # fully specified orientation - Period 1.832 - SemiMajorAxis 0.35 # mass ratio 1.05:0.4 - Eccentricity 0.53 - Inclination 137.0 - AscendingNode 298.1 - ArgOfPericenter 7.9 - MeanAnomaly 133.8 + EllipticalOrbit { # fully specified orientation + Period 1.834 + SemiMajorAxis 0.34 # mass ratio 0.98:0.38 + Eccentricity 0.61 + Inclination 146.3 + AscendingNode 203.8 + ArgOfPericenter 105.2 + MeanAnomaly 73.4 } } @@ -3267,93 +3422,51 @@ Barycenter "Alula Australis B:XI UMa B:53 UMa B:Gliese 423 B:ADS 8119 B" AppMag 4.8 EllipticalOrbit { - Period 0.0109 # 3.98dy - SemiMajorAxis 0.004 # mass ratio 1.05:0.08 + Period 0.0109 # 3.981 d + SemiMajorAxis 0.008 # mass ratio 0.88:0.17 Eccentricity 0 + Inclination 102 # plane-of-inclination: + AscendingNode 70 # 12.7 deg ArgOfPericenter 180 } + + UniformRotation { + Inclination 102 # guess, to match orbit + AscendingNode 70 + } } "Alula Australis Bb:XI UMa Bb:53 UMa Bb:Gliese 423 Bb" +# Fuhrmann et al. (2016) suggest it could be a white dwarf { OrbitBarycenter "Alula Australis B" - SpectralType "L" # brown dwarf - AbsMag 21 # for approximate radius in Celestia + SpectralType "M5V" # estimate from mass + AbsMag 16 # for approximate radius in Celestia EllipticalOrbit { - Period 0.0109 # 3.981dy - SemiMajorAxis 0.056 # mass ratio 1.05:0.08 + Period 0.0109 # 3.981 d + SemiMajorAxis 0.056 # mass ratio 0.88:0.17 Eccentricity 0 + Inclination 102 # plane-of-inclination: + AscendingNode 70 # 12.7 deg + } + + UniformRotation { + Inclination 102 # guess, to match orbit + AscendingNode 70 } } -# Washington Multiplicity Catalog -# (http://ad.usno.navy.mil/wds/wmc/wmc_post191.html) -"Alula Australis C:XI UMa C:53 UMa C:Gliese 423 C" +# Gaia DR2 suggests WDS J11182+3132C is an optical pair +# Wright et al. (2013), A T8.5 Brown Dwarf Member of the xi Ursae Majoris System" +# https://iopscience.iop.org/1538-3881/145/3/84/ +"Alula Australis C:WISE 1118+3125:WISE J111838.70+312537.9" { - RA 169.53272 - Dec 31.539614 - Distance 27.294 - SpectralType "M7V" # from luminosity - AppMag 15 + RA 169.66125400 + Dec 31.42720000 + Distance 28.4885 + SpectralType "T8.5V" + Temperature 600 # approx. + Radius 60000 # approx. + AbsMag 40 # extremely low } - -#====================================================== -# Delfosse, X. et al. (1999) "New Neighbours I: 13 new -# companions to nearby M dwarfs" A&A, 344, 897 -# (http://arxiv.org/abs/astro-ph/9812008) -# RECONS parallax places system well beyond 20ly distance -# from Hipparcos -Barycenter "GJ 2130" # orbit of A & B unknown -{ - RA 266.556484 # mass ratio 0.3:(0.19+0.15) - Dec -32.102873 # - Distance 48.536 -} - -86961 # GJ 2130 A -{ - RA 266.552500 - Dec -32.103611 - Distance 48.536 - SpectralType "M2V" - AppMag 10.49 -} - -Barycenter 86963 "GJ 2130 B" #true separation of Bab not known -{ - RA 266.56015 - Dec -32.102222 - Distance 48.536 -} - -"GJ 2130 Ba:CD-32 13298 A" -{ - RA 266.560000 - Dec -32.102222 - Distance 48.536 - SpectralType "M5.5V" # from apparent magnitude - AppMag 11.75 -} - -"GJ 2130 Bb:CD-32 13298 B" -{ - RA 266.5603 - Dec -32.102222 - Distance 48.536 - SpectralType "M6.5V" # from apparent magnitude - AppMag 12.75 -} - -#=========================================================== -# Star with erroneously large parallax in Hipparcos -# (http://simbad.u-strasbg.fr/simbad/sim-id?Ident=hip+85605&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id) -85605 -{ - RA 262.401250 - Dec 24.653055 - Distance 180 # from spectral class and ap. mag. - SpectralType "K5" - AppMag 11.15 -} -