New orbits for mu Cas, GJ 1116, and Gliese 338
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@ -1310,31 +1310,49 @@ Barycenter 88601 "70 Oph:Gliese 702:Struve 2272:ADS 11046"
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}
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}
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Barycenter "GJ 1116" # orbit of A & B unknown
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# Orbit from Tokovinin et al. (2020), AJ 160 (1), 7
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# "Speckle Interferometry at SOAR in 2019"
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# https://arxiv.org/abs/2005.05305
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# Distance from average of distances from Gaia DR2 parallax for A and B
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Barycenter "GJ 1116"
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{
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RA 134.5629579 # mass ratio 0.11:0.10
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Dec 19.76308611
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Distance 16.735
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RA 134.56295790 # mass ratio 0.11:0.10
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Dec 19.76308611 # A: 194.7225 +/- 0.1251 mas
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Distance 16.735 # B: 195.0836 +/- 0.1754 mas
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}
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"EI Cnc:GJ 1116 A"
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{
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RA 134.56280747
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Dec 19.76340108
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Distance 16.7498 # 194.7225 +/- 0.1251 mas
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OrbitBarycenter "GJ 1116"
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SpectralType "M8Ve"
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Radius 76500 # approx. for class
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AppMag 13.93
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EllipticalOrbit {
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Period 134.4
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SemiMajorAxis 7.902 # mass ratio 0.11:0.10
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Eccentricity 0.661
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Inclination 84.9
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AscendingNode 59.9
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ArgOfPericenter 22.9
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MeanAnomaly 343.3
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}
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}
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"GJ 1116 B:LP 426-40"
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{
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RA 134.56312344
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Dec 19.76273963
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Distance 16.7189 # 195.0836 +/- 0.1754 mas
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OrbitBarycenter "GJ 1116"
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SpectralType "M7V"
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Radius 83500 # approx. for class
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AppMag 13.75
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EllipticalOrbit {
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Period 134.4
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SemiMajorAxis 8.692 # mass ratio 0.11:0.10
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Eccentricity 0.661
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Inclination 84.9
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AscendingNode 59.9
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ArgOfPericenter 202.9
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MeanAnomaly 343.3
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}
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}
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# rotation period from Burningham et al. (2016), MNRAS 463 (2), 2202
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@ -2233,47 +2251,56 @@ Barycenter "Gliese 896 B:BD+19 5116 B"
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AppMag 10.560
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}
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# Parameters from Gonzalez-Alvarez et al. (2020), A&A 637, A93
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# "The CARMENES search for exoplanets around M dwarfs. A super-Earth planet orbiting
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# HD 79211 (GJ 338 B)"
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# https://arxiv.org/abs/2003.13052
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# Distance from average of distances from Gaia DR2 parallax for A and B
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Barycenter "Gliese 338:Struve 1321:ADS 7251"
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{
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RA 138.59887190 # mass ratio 0.60:0.60
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Dec 52.68648597 # A: 157.8796 +/- 0.0366 mas
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RA 138.59872250 # mass ratio 0.69:0.64
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Dec 52.46994924 # A: 157.8796 +/- 0.0366 mas
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Distance 20.658 # B: 157.8851 +/- 0.0414 mas
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}
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45343 "Gliese 338 A:Struve 1321 A:ADS 7251 A"
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{
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OrbitBarycenter "ADS 7251"
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SpectralType "K7V"
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OrbitBarycenter "Gliese 338"
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SpectralType "M0.0V"
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Radius 403500
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AppMag 7.63
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EllipticalOrbit {
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Period 975
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SemiMajorAxis 51 # mass ratio 0.6:0.6
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Eccentricity 0.28
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Inclination 113
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AscendingNode 13
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ArgOfPericenter 97
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MeanAnomaly 264
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Period 1295
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SemiMajorAxis 63.0 # mass ratio 0.69:0.64
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Eccentricity 0.01
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Inclination 123.3
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AscendingNode 348.8
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ArgOfPericenter 184.3
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MeanAnomaly 135.4
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}
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RotationPeriod 391.2 # 16.3 d
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}
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120005 "Gliese 338 B:Struve 1321 B:ADS 7251 B"
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{
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OrbitBarycenter "ADS 7251"
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SpectralType "M0V"
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Radius 432000 # approx. for class
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OrbitBarycenter "Gliese 338"
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SpectralType "M0.0V"
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Radius 403500
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AppMag 7.70
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EllipticalOrbit {
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Period 975
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SemiMajorAxis 52 # mass ratio 0.6:0.6
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Eccentricity 0.28
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Inclination 113
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AscendingNode 13
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ArgOfPericenter 277
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MeanAnomaly 264
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Period 1295
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SemiMajorAxis 67.9 # mass ratio 0.69:0.64
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Eccentricity 0.01
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Inclination 123.3
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AscendingNode 348.8
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ArgOfPericenter 4.3
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MeanAnomaly 135.4
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}
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RotationPeriod 398.64 # 16.61 d
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}
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"LHS 2090:LP 368-128"
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@ -3215,34 +3242,31 @@ Modify 106255 # Wolf 922
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AppMag 2.79
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}
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# Orbit from Agati et al. (2015), A&A 574 (A6), 32
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# "Are the orbital poles of binary stars in the solar neighbourhood anisotropically
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# distributed?"
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# https://www.aanda.org/articles/aa/abs/2015/02/aa23056-13/aa23056-13.html
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# Masses from Drummond et al. (1995), AJ 450, 380
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# "Full Adaptive Optics Images of ADS 9731 and mu Cassiopeiae: Orbits and Masses"
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# https://ui.adsabs.harvard.edu/abs/1995ApJ...450..380D/abstract
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# Parameters from Bond et al. (2020), ApJ 904 (2), 112
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# "Hubble Space Telescope Astrometry of the Metal-poor Visual Binary μ Cassiopeiae:
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# Dynamical Masses, Helium Content, and Age"
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Barycenter 5336 "MU Cas:30 Cas:Gliese 53"
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{
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RA 17.06831127
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Dec 54.92034067
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Distance 24.638 # 132.38 +/- 0.82 mas
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Dec 54.9203406
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Distance 24.586 # 132.66 +/- 0.69 mas
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}
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"MU Cas A:30 Cas A:Gliese 53 A"
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{
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OrbitBarycenter "MU Cas"
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SpectralType "G5VI"
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AppMag 5.17
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SpectralType "G5V"
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AppMag 5.166
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Radius 548900
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EllipticalOrbit { # fully specified orientation
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Period 21.40
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SemiMajorAxis 1.528 # mass ratio 0.742:0.173
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Eccentricity 0.53
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Inclination 30.86
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AscendingNode 338.29
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ArgOfPericenter 129.88
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MeanAnomaly 45.42
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Period 21.568
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SemiMajorAxis 1.4186 # mass ratio 0.7440:0.1728
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Eccentricity 0.5885
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Inclination 25.62
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AscendingNode 344.53
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ArgOfPericenter 124.96
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MeanAnomaly 46.34
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}
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}
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@ -3252,14 +3276,14 @@ Barycenter 5336 "MU Cas:30 Cas:Gliese 53"
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SpectralType "MVI"
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AppMag 11.00
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EllipticalOrbit { # fully specified orientation
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Period 21.40
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SemiMajorAxis 6.554 # mass ratio 0.742:0.173
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Eccentricity 0.53
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Inclination 30.86
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AscendingNode 338.29
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ArgOfPericenter 309.88
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MeanAnomaly 45.42
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EllipticalOrbit {
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Period 21.568
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SemiMajorAxis 6.1080 # mass ratio 0.7440:0.1728
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Eccentricity 0.5885
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Inclination 25.62
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AscendingNode 344.53
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ArgOfPericenter 304.96
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MeanAnomaly 46.34
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}
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}
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