diff --git a/data/nearstars.stc b/data/nearstars.stc index b675074b..cc9b037a 100644 --- a/data/nearstars.stc +++ b/data/nearstars.stc @@ -1310,31 +1310,49 @@ Barycenter 88601 "70 Oph:Gliese 702:Struve 2272:ADS 11046" } } -Barycenter "GJ 1116" # orbit of A & B unknown +# Orbit from Tokovinin et al. (2020), AJ 160 (1), 7 +# "Speckle Interferometry at SOAR in 2019" +# https://arxiv.org/abs/2005.05305 +# Distance from average of distances from Gaia DR2 parallax for A and B +Barycenter "GJ 1116" { - RA 134.5629579 # mass ratio 0.11:0.10 - Dec 19.76308611 - Distance 16.735 + RA 134.56295790 # mass ratio 0.11:0.10 + Dec 19.76308611 # A: 194.7225 +/- 0.1251 mas + Distance 16.735 # B: 195.0836 +/- 0.1754 mas } "EI Cnc:GJ 1116 A" { - RA 134.56280747 - Dec 19.76340108 - Distance 16.7498 # 194.7225 +/- 0.1251 mas + OrbitBarycenter "GJ 1116" SpectralType "M8Ve" - Radius 76500 # approx. for class AppMag 13.93 + + EllipticalOrbit { + Period 134.4 + SemiMajorAxis 7.902 # mass ratio 0.11:0.10 + Eccentricity 0.661 + Inclination 84.9 + AscendingNode 59.9 + ArgOfPericenter 22.9 + MeanAnomaly 343.3 + } } "GJ 1116 B:LP 426-40" { - RA 134.56312344 - Dec 19.76273963 - Distance 16.7189 # 195.0836 +/- 0.1754 mas + OrbitBarycenter "GJ 1116" SpectralType "M7V" - Radius 83500 # approx. for class AppMag 13.75 + + EllipticalOrbit { + Period 134.4 + SemiMajorAxis 8.692 # mass ratio 0.11:0.10 + Eccentricity 0.661 + Inclination 84.9 + AscendingNode 59.9 + ArgOfPericenter 202.9 + MeanAnomaly 343.3 + } } # rotation period from Burningham et al. (2016), MNRAS 463 (2), 2202 @@ -2233,47 +2251,56 @@ Barycenter "Gliese 896 B:BD+19 5116 B" AppMag 10.560 } +# Parameters from Gonzalez-Alvarez et al. (2020), A&A 637, A93 +# "The CARMENES search for exoplanets around M dwarfs. A super-Earth planet orbiting +# HD 79211 (GJ 338 B)" +# https://arxiv.org/abs/2003.13052 # Distance from average of distances from Gaia DR2 parallax for A and B Barycenter "Gliese 338:Struve 1321:ADS 7251" { - RA 138.59887190 # mass ratio 0.60:0.60 - Dec 52.68648597 # A: 157.8796 +/- 0.0366 mas + RA 138.59872250 # mass ratio 0.69:0.64 + Dec 52.46994924 # A: 157.8796 +/- 0.0366 mas Distance 20.658 # B: 157.8851 +/- 0.0414 mas } 45343 "Gliese 338 A:Struve 1321 A:ADS 7251 A" { - OrbitBarycenter "ADS 7251" - SpectralType "K7V" + OrbitBarycenter "Gliese 338" + SpectralType "M0.0V" + Radius 403500 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 + Period 1295 + SemiMajorAxis 63.0 # mass ratio 0.69:0.64 + Eccentricity 0.01 + Inclination 123.3 + AscendingNode 348.8 + ArgOfPericenter 184.3 + MeanAnomaly 135.4 } + + RotationPeriod 391.2 # 16.3 d } 120005 "Gliese 338 B:Struve 1321 B:ADS 7251 B" { - OrbitBarycenter "ADS 7251" - SpectralType "M0V" - Radius 432000 # approx. for class + OrbitBarycenter "Gliese 338" + SpectralType "M0.0V" + Radius 403500 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 + Period 1295 + SemiMajorAxis 67.9 # mass ratio 0.69:0.64 + Eccentricity 0.01 + Inclination 123.3 + AscendingNode 348.8 + ArgOfPericenter 4.3 + MeanAnomaly 135.4 } + + RotationPeriod 398.64 # 16.61 d } "LHS 2090:LP 368-128" @@ -3215,34 +3242,31 @@ Modify 106255 # Wolf 922 AppMag 2.79 } -# Orbit from Agati et al. (2015), A&A 574 (A6), 32 -# "Are the orbital poles of binary stars in the solar neighbourhood anisotropically -# distributed?" -# https://www.aanda.org/articles/aa/abs/2015/02/aa23056-13/aa23056-13.html -# Masses from Drummond et al. (1995), AJ 450, 380 -# "Full Adaptive Optics Images of ADS 9731 and mu Cassiopeiae: Orbits and Masses" -# https://ui.adsabs.harvard.edu/abs/1995ApJ...450..380D/abstract +# Parameters from Bond et al. (2020), ApJ 904 (2), 112 +# "Hubble Space Telescope Astrometry of the Metal-poor Visual Binary μ Cassiopeiae: +# Dynamical Masses, Helium Content, and Age" Barycenter 5336 "MU Cas:30 Cas:Gliese 53" { RA 17.06831127 - Dec 54.92034067 - Distance 24.638 # 132.38 +/- 0.82 mas + Dec 54.9203406 + Distance 24.586 # 132.66 +/- 0.69 mas } "MU Cas A:30 Cas A:Gliese 53 A" { OrbitBarycenter "MU Cas" - SpectralType "G5VI" - AppMag 5.17 + SpectralType "G5V" + AppMag 5.166 + Radius 548900 EllipticalOrbit { # fully specified orientation - Period 21.40 - SemiMajorAxis 1.528 # mass ratio 0.742:0.173 - Eccentricity 0.53 - Inclination 30.86 - AscendingNode 338.29 - ArgOfPericenter 129.88 - MeanAnomaly 45.42 + Period 21.568 + SemiMajorAxis 1.4186 # mass ratio 0.7440:0.1728 + Eccentricity 0.5885 + Inclination 25.62 + AscendingNode 344.53 + ArgOfPericenter 124.96 + MeanAnomaly 46.34 } } @@ -3252,14 +3276,14 @@ Barycenter 5336 "MU Cas:30 Cas:Gliese 53" SpectralType "MVI" AppMag 11.00 - EllipticalOrbit { # fully specified orientation - Period 21.40 - SemiMajorAxis 6.554 # mass ratio 0.742:0.173 - Eccentricity 0.53 - Inclination 30.86 - AscendingNode 338.29 - ArgOfPericenter 309.88 - MeanAnomaly 45.42 + EllipticalOrbit { + Period 21.568 + SemiMajorAxis 6.1080 # mass ratio 0.7440:0.1728 + Eccentricity 0.5885 + Inclination 25.62 + AscendingNode 344.53 + ArgOfPericenter 304.96 + MeanAnomaly 46.34 } }