Companion star orbits out to 25ly for 1.3.1pre3

Post #1by **granthutchison** » 16.06.2003, 23:03

I've harvested the correct orbital orientations for binary/multiple systems with known orbits from the Sixth Catalogue of Orbits of Visual Binary Stars, as well as some orbital periods for spectral binaries. To get a full depiction of local space quite a few star systems need to be added to the Hipparcos data, but since 1.3.1 supports the insertion of names in an stc file, you at least don't have to mess about editing starnames.dat any more.
So there follows first an stc listing of star systems, and secondly an ssc for companion star orbits. For those who'd rather not cut and paste, you can get a zip of the files at http://www.lns.cornell.edu/~seb/celestia/hutchison/nearstars1.zip (thanks again to Selden for hosting this and other stuff of mine).
It's interesting to compare the position of, say, Sirius B in Celestia to the diagram of its orbit in textbooks.
The quadruple system of Alula Australis lies beyond my self-imposed 25ly cut-off, but it has been included because a) its original parallax indicated that it was closer than 25ly and b) it's an interesting multiple system that's worth a visit.

nearstars.stc

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#Nearby star systems out to 25ly, not included in Celestia 1.3.1

53020
{
   RA 162.717
   Dec 6.808149
   Distance 22.19
   SpectralType "M4V"
   AppMag 11.66
}

55203
{
   RA 169.54545
   Dec 31.52889
   Distance 27.29
   SpectralType "G0V"
   AppMag 4.37
}

86961
{
   RA 266.5527
   Dec -32.10355
   Distance 20.16
   SpectralType "M2V"
   AppMag 10.49
}

350000 "SO25300.5+165258"
{
   RA 43.253500
   Dec 16.881389
#   Distance 7.59      # initial parallax distance
   Distance 11.74      # more likely distance given spectral class
   SpectralType "M6.5V"
   AppMag 15
}

350001 "Wolf 359:CN Leo:Gliese 406"
{   
   RA 164.121783
   Dec 7.014722
   Distance 7.783
   SpectralType "M6.0V"
   AppMag 13.44
}


350002 "Luyten 726-8:Gliese 65"
{
   RA 24.755529
   Dec -17.950278
   Distance 8.729
   SpectralType "M5.5V"
   AppMag 12.54
}

350003 "Ross 248:HH And:Gliese 905"
{
   RA 355.477917
   Dec 44.175000
   Distance 10.32
   SpectralType "M5.5V"
   AppMag 12.29
}

350004 "Luyten 789-6:Gliese 866"
{
   RA 339.639167
   Dec -15.301944
   Distance 11.27
   SpectralType "M5.0V"
   AppMag 13.33
}

350005 "EPS Ind b:Gliese 845 b"
{
   RA 331.043750
   Dec -56.782500
   Distance 11.826
   SpectralType "M9.0V" #for Celestia 1.3.1pre3
#   SpectralType "T2.5V" #accepted by Celestia 1.3.1pre4 and above
   AbsMag 26.5 #estimate from temp and bolometric mag
}

350006 "DX Cnc:Giclas 51-15:GJ 1111"
{
   RA 127.456250
   Dec 26.776944
   Distance 11.83
   SpectralType "M6.5V"
   AppMag 14.78
}

350007 "Luyten 372-58:RECONS 1:GJ 1061"
{
   RA 54.000000
   Dec -44.512778
   Distance 11.99
   SpectralType "M5.5V"
   AppMag 13.03
}

350008 "DENIS 1048-3956:RECONS 2"
{
   RA 162.061250
   Dec -39.935000
   Distance 13.16
   SpectralType "M9.0V"
   AppMag 16.5
}

350009 "Wolf 424:Gliese 473"
{
   RA 188.321667
   Dec 9.020833
   Distance 14.31
   SpectralType "M5.5V"
   AppMag 13.18
}

350010 "TZ Ari:Luyten 1159-16:Gliese 83.1"
{
   RA 30.055000
   Dec 13.052222
   Distance 14.51
   SpectralType "M4.5V"
   AppMag 12.27
}

350011 "Luyten 143-23:GJ 3618"
{
   RA 161.132500
   Dec -61.193889
   Distance 14.66
   SpectralType "M5.5V"
   AppMag 13.92
}

350012 "LP 731-58:GJ 3622"
{
   RA 162.052500
   Dec -11.337222
   Distance 14.81
   SpectralType "M6.5V"
   AppMag 15.60
}

350013 "GJ 1245 A:V1581 Cyg"
{
   RA 298.475833
   Dec 44.415278
   Distance 14.81
   SpectralType "M5.5V"
   AppMag 13.46
}

350014 "GJ 1245 B"
{
   RA 298.480000
   Dec 44.415556
   Distance 14.81
   SpectralType "M6.0V"
   AppMag 14.01
}

350015 "GJ 1002"
{
   RA 1.682500
   Dec -7.539444
   Distance 15.31
   SpectralType "M5.5V"
   AppMag 13.76
}

350016 "Lalande 21258 B:WX UMa:Gliese 412 B"
{
   RA 166.376667
   Dec 43.521667
   Distance 15.83
   SpectralType "M5.5V"
   AppMag 14.48
}

350017 "AD Leo:Gliese 388"
{
   RA 154.901667
   Dec 19.869444
   Distance 15.94
   SpectralType "M3.0V"
   AppMag 9.32
}

350018 "LP 944-20"
{
   RA 54.896667
   Dec -35.428056
   Distance 16.20
   SpectralType "M9.0V"
   AppMag 18.50
}

350019 "Keid B:OMI2 Eri B:40 Eri B:Gliese 166 B"
{
   RA 63.841667
   Dec -7.659722
   Distance 16.452
   SpectralType "D"
   AppMag 9.52
}


350020 "EI Cnc:GJ 1116 A"
{
   RA 134.562083
   Dec 19.761944
   Distance 17.06
   SpectralType "M5.5V"
   AppMag 14.06
}

350021 "LP 426-40:GJ 1116 B"
{
   RA 134.562083
   Dec 19.763611
   Distance 17.06
   SpectralType "M5.5V"
   AppMag 14.92
}

350022 "Giclas 099-49:GJ 3379"
{
   RA 90.015000
   Dec 2.705556
   Distance 17.52
   SpectralType "M3.5V"
   AppMag 11.33
}

350023 "LP 656-38:RECONS 3:GJ 3323"
{
   RA 75.487500
   Dec -6.946389
   Distance 17.85
   SpectralType "M3.5V"
   AppMag 12.15
}

350024 "2MASS 1835+3259"
{
   RA 278.907917
   Dec 32.998333
   Distance 18.48
   SpectralType "M8.5V"
   AppMag 18.27
}

350025 "Luyten 347-14:Gliese 754"
{
   RA 290.200000
   Dec -45.557500
   Distance 18.62
   SpectralType "M4.5V"
   AppMag 12.23
}

350026 "Ross 652 B:Wolf 1055 B:Van Biesbroek's Star:VB 10:V1298 Aql:Gliese 752 B"
{
   RA 289.242917
   Dec 5.150278
   Distance 19.156
   SpectralType "M8.0V"
   AppMag 17.50
}

350027 "Luyten 674-15:Gliese 300"
{
   RA 123.170000
   Dec -21.552778
   Distance 19.20
   SpectralType "M3.5V"
   AppMag 12.07
}

350028 "33 Lib d:Gliese 570 d"
{
   RA 224.312500
   Dec -21.363889
   Distance 19.267
   SpectralType "M9.0V" #for Celestia 1.3.1pre3
#   SpectralType "T8V" #accepted by Celestia 1.3.1pre4 and above
   AbsMag 38 #very approx
}

350029 "Gliese 783 B:CD-36 13940 B"
{
   RA 302.8004
   Dec -36.09849
   Distance 19.739
   SpectralType "M4.0V"
   AppMag 11.5
}

350030 "LP 44-113:GJ 1221"
{
   RA 267.027917
   Dec 70.874722
   Distance 19.81
   SpectralType "D"
   AppMag 14.12
}

350031 "GJ 2130 C"        #true separation from B not known
{
   RA 266.56035
   Dec -32.10166
   Distance 20.1624
   SpectralType "M2V"
   AppMag 12.75
}

350032 "LP 914-54:GJ 3877"
{
   RA 224.160417
   Dec -28.164167
   Distance 20.87
   SpectralType "M7.0V"
   AppMag 17.05
}

350033 "Giclas 180-60:GJ 3959"
{
   RA 247.826667
   Dec 40.865000
   Distance 20.91
   SpectralType "M5V"
   AppMag 14.79
}

350034 "LP 658-2:Gliese 223.2"
{
   RA 88.790417
   Dec -4.171389
   Distance 21.05
   SpectralType "D"
   AppMag 14.45
}

350035 "Wolf 630 D:Gliese 644 D:VB8"
{
   RA 253.899167
   Dec -8.394444
   Distance 21.185
   SpectralType "M7V"
   AppMag 16.80
}

350036 "Luyten 1190-34:GL Vir:GJ 1156"
{
   RA 184.751250
   Dec 11.125278
   Distance 21.33
   SpectralType "M5.0V"
   AppMag 13.80
}

350037 "Ross 619:Gliese 299"
{
   RA 122.989583
   Dec 8.774444
   Distance 22.30
   SpectralType "M4.0V"
   AppMag 12.82
}

350038 "LP 771-95:Luyten 730-18:GJ 3192:RECONS 4"
{
   RA 45.46411209
   Dec -16.593372777
   Distance 22.37
   SpectralType "M3V"
   AppMag 11.93
}

350039 "LP 771-96:LP 771-95 B:GJ 3193"
{
   RA 45.46547306
   Dec -16.59479288
   Distance 22.37
   SpectralType "M3V"
   AppMag 11.3
}

350040 "LP 771-95 C"
{
   RA 45.46432292
   Dec -16.59359277
   Distance 22.37
   SpectralType "M5V"
   AppMag 13.1
}

350041 "Gliese 667 C"
{
   RA 259.746250
   Dec -34.994722
   Distance 22.737
   SpectralType "M1.5V"
   AppMag 10.26
}

350042 "Luyten 97-12:Gliese 293"
{
   RA 118.311250
   Dec -67.791944
   Distance 23.10
   SpectralType "D"
   AppMag 14.08
}

350043 "268 Cet B:BX Cet:Gliese 105 B"
{
   RA 39.063750
   Dec 6.871667
   Distance 23.510
   SpectralType "M3.5V"
   AppMag 11.66
}

350044 "GJ 1286"
{
   RA 353.794583
   Dec -2.390278
   Distance 23.59
   SpectralType "M5.5V"
   AppMag 14.67
}

350045 "LP 71-165:GJ 4083"
{
   RA 274.740417
   Dec 66.192222
   Distance 23.72
   SpectralType "M4.5V"
   AppMag 13.49
}

350046 "Luyten 788-34:GJ 4274"
{
   RA 335.777500
   Dec -17.606944
   Distance 23.72
   SpectralType "M4.5V"
   AppMag 13.26
}

350047 "GJ 1224"
{
   RA 271.887083
   Dec -15.964167
   Distance 24.60
   SpectralType "M4.5V"
   AppMag 13.61
}

350048 "Luyten 1813-21:GJ 3378"
{
   RA 90.290417
   Dec 59.598333
   Distance 24.69
   SpectralType "M3.5V"
   AppMag 11.71
}

stellarcompanions.ssc

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# Orbit specifications for companion stars out to 25 light-years

# Most often, the direction of the node on the plane of the sky
# is unknown - the orbit's appearance is correct when viewed
# from Earth, but it may be tilted 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".


"Sirius B" "Sirius"      # fully specified orientation
{
   Texture "bstar.jpg"   # DA2VII
   Radius 5800      #

   Emissive true

   EllipticalOrbit {
      Period          50.09
      SemiMajorAxis   19.8
      Eccentricity    0.592
      Inclination   97.51
      AscendingNode   161.33
      ArgOfPericenter 184.56
      MeanAnomaly     40.89
   }

   RotationPeriod 0.5 # plausible guess
}

"UV Cet" "Luyten 726-8"
{
   Texture "mstar.jpg"   # M6V
   Radius 100000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          26.52
      SemiMajorAxis   5.22
      Eccentricity    0.62
      Inclination   101.29
      AscendingNode   159.51
      ArgOfPericenter 219.73
      MeanAnomaly     21.31
   }

   RotationPeriod   24 # plausible guess
}

"Luyten 789-6 B" "Luyten 789-6"
{
   Texture "mstar.jpg"   # ~M7V
   Radius 120000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          2.2506
      SemiMajorAxis   1.20
      Eccentricity    0.437
      Inclination   96.18
      AscendingNode   133.51
      ArgOfPericenter 256.42
      MeanAnomaly     241.70
   }

   RotationPeriod   20 # plausible guess

}

"Luyten 789-6 C" "Luyten 789-6"
{
   Texture "mstar.jpg"   # ~M7V
   Radius 120000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          0.010   # 3.8dys
      SemiMajorAxis   0.027   # to match period
      Inclination   96   # guess - to match plane of B
      AscendingNode   133   # guess - to match plane of B
   }

   RotationPeriod   20 # plausible guess

}


"Procyon B" "Procyon"
{
   Texture "bstar.jpg"   # DAVII
   Radius 8400      #

   Emissive true

   EllipticalOrbit {
      Period          40.82
      SemiMajorAxis   14.9
      Eccentricity    0.407
      Inclination   42.9
      AscendingNode   27.8
      ArgOfPericenter 268.4
      MeanAnomaly     282.5
   }

   RotationPeriod 0.5 # plausible guess
}

"GQ And" "Groombridge 34"
{
   Texture "mstar.jpg"   # M3.5V
   Radius 130000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          2600
      SemiMajorAxis   147
      Eccentricity   0
      Inclination   67.9
      AscendingNode   308.4
      MeanLongitude   203.0
   }

   RotationPeriod 120 # plausible guess
}

"DO Cep" "Kruger 60"
{
   Texture "mstar.jpg"   # M4V
   Radius 240000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          44.67
      SemiMajorAxis   9.55
      Eccentricity   0.41
      Inclination   37.0
      AscendingNode   126.6
      ArgOfPericenter 84.08
      MeanAnomaly     240.0
   }
   
   RotationPeriod   98 # plausible guess
}

"Ross 614 B" "Ross 614"
{
   Texture "mstar.jpg"   # ~M7V
   Radius 120000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          16.5
      SemiMajorAxis   4.53
      Eccentricity   0.38
      Inclination   37.0
      AscendingNode   71.2
      ArgOfPericenter 310.7
      MeanAnomaly     0.0
   }

   RotationPeriod   20 # plausible guess
}

"FL Vir" "Wolf 424"
{
   Texture "mstar.jpg"   # ~M6V
   Radius 100000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          15.9
      SemiMajorAxis   3.98
      Eccentricity   0.3
      Inclination   28.7
      AscendingNode   359.5
      ArgOfPericenter 261.1
      MeanAnomaly     169.8
   }

   RotationPeriod   24 # plausible guess
}

"GJ 1245 C" "GJ 1245 A"
{
   Texture "mstar.jpg"   # M5.5V
   Radius 170000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          15.22
      SemiMajorAxis   1.27
      Eccentricity   0.32
      Inclination   20.0
      AscendingNode   196.9
      ArgOfPericenter 237.8
      MeanAnomaly     39.7
   }

   RotationPeriod   12 # plausible guess
}

"Keid C" "Keid B"
{
   Texture "mstar.jpg"   # M4.5V
   Radius 190000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          252.1
      SemiMajorAxis   34.89
      Eccentricity   0.41
      Inclination   84.4
      AscendingNode   215.2
      ArgOfPericenter 270.4
      MeanAnomaly     214.77
   }

   RotationPeriod   31 # plausible guess
}

"70 Oph B" "70 Oph"
{
   Texture "gstar.jpg"   # K5V
   Radius 510000      #

   Emissive true

   EllipticalOrbit {
      Period          88.38
      SemiMajorAxis   23.16
      Eccentricity   0.4992
      Inclination   114.9
      AscendingNode   330.8
      ArgOfPericenter 161.6
      MeanAnomaly     63.9
   }
   
   RotationPeriod   440   # plausible guess
}

"Luyten 722-22 B" "Luyten 722-22"
{
   Texture "mstar.jpg"   # ~M7V
   Radius 120000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          4.566
      SemiMajorAxis   1.58
      Eccentricity   0.364
      Inclination   72.3
      AscendingNode   85.2
      ArgOfPericenter 349.4
      MeanAnomaly     5.4
   }

   RotationPeriod   20 # plausible guess
}

"Stein 2051 B" "Stein 2051"
{
   Texture "bstar.jpg"   # DC5VII
   Radius 6000      #

   Emissive true

   EllipticalOrbit {
      Period          23
      SemiMajorAxis   0.39
      Eccentricity   0.3
      Inclination   63.9
      AscendingNode   328.0
      ArgOfPericenter 268.9
      MeanAnomaly     172.2
   }

   RotationPeriod 0.5 # plausible guess
}

"Gliese 229 b" "Gliese 229"
{
   Texture "browndwarf.jpg"   # T6.5V
   Radius 70000         #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period       200 # approximate orbit
      SemiMajorAxis   39  #
   }

   RotationPeriod 5 #guess
}

"33 Lib BC" "33 Lib"   # fully specified orientation
{
   Class "invisible"
   Radius 1e6

   EllipticalOrbit {
      Period          2130
      SemiMajorAxis   191
      Eccentricity   0.2
      Inclination   142.6
      AscendingNode   191.6
      ArgOfPericenter 309.2
      MeanAnomaly     52.6
   }

   Obliquity               90.7
   EquatorAscendingNode    30.5

}

"33 Lib B" "33 Lib/33 Lib BC"
{
   Texture "mstar.jpg"   # M1V
   Radius 450000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          308.9     # 0.8457yr
      SemiMajorAxis   66000000  # appropriate for mass ~0.55
      Eccentricity   0.7559
      ArgOfPericenter 221.9
      MeanAnomaly     45.2
   }

   RotationPeriod   300 # plausible guess
}

"33 Lib C" "33 Lib/33 Lib BC"
{
   Texture "mstar.jpg"   # M3V
   Radius 300000      #

   Color   [ 1 0.7 0.7 ]

   Emissive true

   EllipticalOrbit {
      Period          308.9      # 0.8457yr
      SemiMajorAxis   103500000  # appropriate for mass ~0.35
      Eccentricity   0.7559
      ArgOfPericenter 41.9
      MeanAnomaly     45.2
   }

   RotationPeriod   160 # plausible guess
}

"Achird B" "Achird"
{
   Texture "gstar.jpg"   # K7V
   Radius 460000      #

   Emissive true

   EllipticalOrbit {
      Period          480
      SemiMajorAxis   71.4
      Eccentricity    0.497
      Inclination   152.2
      AscendingNode   7.0
      ArgOfPericenter 359.6
      MeanAnomaly     82.8
   }

   RotationPeriod   400 # plausible guess
}

"36 Oph B" "36 Oph A"
{
   Texture "gstar.jpg"   # K1V
   Radius 560000      #

   Emissive true

   EllipticalOrbit {
      Period          470.9
      SemiMajorAxis   77.8
      Eccentricity    0.916
      Inclination   13.3
      AscendingNode   348.9
      ArgOfPericenter 91.0
      MeanAnomaly     246.3
   }

   RotationPeriod 480 # plausible guess
}

"Ross 986 B" "Ross 986"
{
   Texture "mstar.jpg"   # ~M6V
   Radius 150000      #

   Emissive true

   EllipticalOrbit {
      Period          0.028   # 10.43dy
      SemiMajorAxis   0.06    # from predicted masses of 0.17+0.16
   }

   RotationPeriod 24 # plausible guess
}

"Struve 1321 B" "Struve 1321"
{
   Texture "mstar.jpg"   # K7V
   Radius 450000      #

   Emissive true

   EllipticalOrbit {
      Period          975
      SemiMajorAxis   103.2
      Eccentricity    0.28
      Inclination   113.3
      AscendingNode   13.4
      ArgOfPericenter 276.5
      MeanAnomaly     264.0
   }

   RotationPeriod   360 # plausible guess
}

"Gliese 896 C" "Gliese 896"
{
   Texture "mstar.jpg"   # ~M7V
   Radius 120000      # 

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          3.5   # "of the order of a few years"
      SemiMajorAxis   1.7   # from estimated masses of 0.34+0.13
   }

   RotationPeriod   20 # plausible guess
}

"Gliese 896 BD" "Gliese 896"
{
   Class "invisible"
   Radius 1e6

   EllipticalOrbit {
      Period          359
      SemiMajorAxis   42.92
      Eccentricity    0.2
      Inclination   19.6
      AscendingNode   138.8
      ArgOfPericenter 299.1
      MeanAnomaly     352.0
   }

}

"Gliese 896 B" "Gliese 896/Gliese 896 BD"
{
   Texture "mstar.jpg"   # M4.5V
   Radius 160000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          1280      # "of the order of a few years"
      SemiMajorAxis   70000000   # appropriate for mass ~0.16
   }

   RotationPeriod   70 # plausible guess
}

"Gliese 896 D" "Gliese 896/Gliese 896 BD"
{
   Texture "mstar.jpg"   # ~M9V
   Radius 70000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          1280      # "of the order of a few years"
      SemiMajorAxis   130000000   # appropriate for mass ~0.09
      MeanAnomaly   180
   }

   RotationPeriod 5 # plausible guess
}

"Gliese 661 B" "Gliese 661"
{
   Texture "mstar.jpg"   # ~M3V
   Radius 280000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          12.9512
      SemiMajorAxis   4.82
      Eccentricity    0.743
      Inclination   25.8
      AscendingNode   59.0
      ArgOfPericenter 324.9
      MeanAnomaly     249.3
   }

   RotationPeriod   170 # plausible guess
}

"Wolf 630 BC" "Wolf 630"   # fully specified orientation
{
   Class "invisible"

   EllipticalOrbit {
      Period          1.71727
      SemiMajorAxis   1.29
      Eccentricity    0.043
      Inclination   69.7
      AscendingNode   0.1
      ArgOfPericenter 44.0
      MeanAnomaly     325.6
   }

   Obliquity      70   # orbits of BC are thought to be 
   EquatorAscendingNode   0   # nearly coplanar with A[BC]
}

"Wolf 630 B" "Wolf 630/Wolf 630 BC"
{
   Texture "mstar.jpg"   # ~M3V
   Radius 300000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          2.965522
      SemiMajorAxis   2500000   # estimated from masses 0.34+0.30
      Eccentricity    0.026
   }

   RotationPeriod   170 # plausible guess
}

"Wolf 630 C" "Wolf 630/Wolf 630 BC"
{
   Texture "mstar.jpg"   # ~M4V
   Radius 250000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          2.965522
      SemiMajorAxis   2700000   # estimated from masses 0.34+0.30
      Eccentricity    0.026
      ArgOfPericenter   180
   }

   RotationPeriod   100 # plausible guess
}

"Ross 775 B" "Ross 775"
{
   Texture "mstar.jpg"   # ~M3V
   Radius 300000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          0.146   # 53.2dys
      SemiMajorAxis   0.22   # estimated from masses 0.26+0.26
   }

   RotationPeriod   170 # plausible guess
}

"XI Boo B" "XI Boo"
{
   Texture "gstar.jpg"   # K4V
   Radius 500000      #

   Emissive true

   EllipticalOrbit {
      Period          151.505
      SemiMajorAxis   32.9
      Eccentricity    0.512
      Inclination   81.97
      AscendingNode   270.36
      ArgOfPericenter 338.81
      MeanAnomaly     215.37
   }

   RotationPeriod   450 # plausible guess
}

"Gliese 667 B" "Gliese 667"
{
   Texture "gstar.jpg"   # K5V
   Radius 490000      #

   Emissive true

   EllipticalOrbit {
      Period          42.15
      SemiMajorAxis   12.6
      Eccentricity    0.58
      Inclination   136.6
      AscendingNode   305.4
      ArgOfPericenter 3.6
      MeanAnomaly     205.8
   }

   RotationPeriod   400 # plausible guess
}

"268 Cet C" "268 Cet"
{
   Texture "mstar.jpg"   #  M7.5V
   Radius 100000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          60
      SemiMajorAxis   15
      Eccentricity    0.75
      Inclination   82   # "nearly face-on orbit"
      AscendingNode   310   #
   }

   RotationPeriod 5 # plausible guess
}

"Giclas 203-47 B" "Giclas 203-47"
{
   Texture "bstar.jpg"   # white dwarf
   Radius 6000      #

   Emissive true

   EllipticalOrbit {
      Period          0.04   # 15 days
      SemiMajorAxis   0.1   # estimated from masses 0.3+0.5
      Eccentricity    0.07
   }

   RotationPeriod 0.5 # plausible guess
}

"Mu Cas B" "Mu Cas"      # fully specified orientation
{
   Texture "mstar.jpg"   # M subdwarf
   Radius 70000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          21.43
      SemiMajorAxis   1.40
      Eccentricity    0.61
      Inclination   25.4
      AscendingNode   336.4
      ArgOfPericenter 136.6
      MeanAnomaly     47.0
   }
   
   RotationPeriod   5 # plausible guess
}

"Alula Australis B" "Alula Australis"   # fully specified orientation
{
   Texture "gstar.jpg"   # G0V
   Radius 760000      #

   Emissive true

   EllipticalOrbit {
      Period          59.878
      SemiMajorAxis   21.2
      Eccentricity    0.398
      Inclination   14.1
      AscendingNode   192.1
      ArgOfPericenter 188.7
      MeanAnomaly     29.6
   }

   RotationPeriod   260 # plausible guess
}

"Alula Australis C" "Alula Australis"   # fully specified orientation
{
   Texture "mstar.jpg"   # ~M3V from calc mass 0.4
   Radius 300000      #

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          1.832
      SemiMajorAxis   0.48
      Eccentricity    0.53
      Inclination   137.0
      AscendingNode   298.1
      ArgOfPericenter 7.9
      MeanAnomaly     133.8
   }

   RotationPeriod   250 # plausible guess
}

"Alula Australis D" "Alula Australis/Alula Australis B"
{
   Texture "browndwarf.jpg"
   Radius 70000

   Emissive true

   Color   [ 1 0.7 0.7 ]

   EllipticalOrbit {
      Period          3.98
      SemiMajorAxis   9000000
      Eccentricity    0
   }

   RotationPeriod   5 # plausible guess
}

Grant

EDITED TO CORRECT MISDEFINITION FOR 33 LIB SYSTEM

JackHiggins · Post #2by **JackHiggins** » 17.06.2003, 00:15

Brilliant!

Now all we need is a way to change "Planetary companions present" to "Stellar companions present"...

marc · Post #3by **marc** » 17.06.2003, 00:47

Nice work Grant, I'm looking forward to having a play with this after work, especially a look at the Alula Australis system.

Post #4by **granthutchison** » 17.06.2003, 02:29

This add-on will require some revision for versions beyond 1.3.1pre3.
Firstly, the three stars with Hipparcos numbers listed at the start of the stc have been added directly to stars.dat for future releases. Secondly, future releases will support the brown dwarf spectral classes, so won't need the work-around of assigning them to class M9V.
I've therefore made a second version of the stc above, incorporating these changes, which you should download and use to replace this version as soon as you upgrade to a newer Celestia release.
You can find it at http://www.lns.cornell.edu/~seb/celestia/hutchison/nearstars.html.

Grant

Guest · Post #5by **Guest** » 10.07.2003, 20:33

Hello,
I've extracted the zip.file to root and added to "extras" the nearstars.stc and the stellarcompanions.ssc, yet all new near stars failed to show up in the Star Browser and Select Object and most of the stellar companions where nowhere to find either (they didn't exhibit any orbits). Some got through though like Sirius B and Procyon B.

Err... what am I doing wrong?

Gennaro · Post #6by **Gennaro** » 10.07.2003, 20:34

Hello,
I've extracted the zip.file to root and added to "extras" the nearstars.stc and the stellarcompanions.ssc, yet all new near stars failed to show up in the Star Browser and Select Object and most of the stellar companions where nowhere to find either (they didn't exhibit any orbits). Some got through though like Sirius B and Procyon B.

Err... what am I doing wrong?

Post #7by **selden** » 10.07.2003, 20:49

Which zip file?
which ssc file?
which stc file?
which version of celestia?

your symptoms are consistant with trying to use the stc file that's intended for pre4 (or later) with pre3 (or earlier). i.e. using a file that contains star names with a version of celestia that doesn't understand them.

Guest · Post #8by **Guest** » 10.07.2003, 22:22

Sorry, maybe I should have been a little more specific.

1. This zip file: http://www.lns.cornell.edu/~seb/celestia/hutchison/nearstars1.zip

2. The ssc. file contained in the above is called "stellarcompanions.ssc".

3. The stc. file contained in the above is called "nearstars.stc"

4. The current downloadable low-resolution version, which to the best of my knowledge is 1.3.0 (I find my system works a little better that way).

Regards!

Post #9by **granthutchison** » 10.07.2003, 22:40

Gennaro:
The add-on is intended for 1.3.1pre3 and above, which is why I called the thread "Companion star orbits out to 25ly for 1.3.1pre3".
It doesn't work with 1.3.0 because that version doesn't support star names in the stc file (you have to edit starnames.dat instead).
So if you want this to work you'll need to download the current Celestia version
http://www.celestiaproject.net/celestia/files/ ... .1pre6.exe
and then use this add-on
http://www.lns.cornell.edu/~seb/celestia/hutchison/nearstars2.zip

For more information see Selden's page at
http://www.lns.cornell.edu/~seb/celestia/hutchison/nearstars.html

Grant

Gennaro · Post #10by **Gennaro** » 10.07.2003, 23:09

Well, I thought that was a little strange it was called "1.3.1pre3" but if you go to the download page on this site you'll see that it's version 1.3.0 you're getting. Made my last installment this afternoon, so it's not that I'm unaware of the fact that I'd need the latest version.
Excuse me for this inconvenience, but it should be okay now. Thanks.

Post #11by **granthutchison** » 10.07.2003, 23:17

Gennaro wrote:but if you go to the download page on this site you'll see that it's version 1.3.0 you're getting.

Sure, but Chris regularly announces pre-release versions on this forum - and those of us who just can't wait for the definitive version tend to produce add-ons to exploit any new features in those pre-releases that particularly take our fancy

It was the ease of adding new star names, introduced in 1.3.1pre3, that got me going with this 25ly add-on.

Grant

Post #12by **granthutchison** » 15.07.2003, 01:54

I just fixed the 33 Librae system. It was both invisible and incorrectly specified. :cry:

Doh.
I've sent replacement zips to Selden, so the corrected versions are downloadable now. Alternatively, just copy the new entries for 33 Lib BC, 33 Lib B and 33 Lib C from the (now edited) listing at the head of this thread, and paste 'em into your old stellarcompanions.ssc on top of the previous bad definitions.
Sorry!

Grant