celestia-common 1.6.1+dfsg-3 / usr / share / celestia / data / nearstars.stc

# 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.

# 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.

# 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.
# 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.

Barycenter "Solar System Barycenter:SSB"
{
	RA 0
	Dec 0
	Distance 0
}

0 "Sol:Sun"
{
	OrbitBarycenter "Solar System Barycenter"
	CustomOrbit "vsop87-sun"

	SpectralType "G2V"
	AbsMag 4.83

	UniformRotation
	{
	    Period         609.12  # 25.38 days
	    Inclination      7.25
	    AscendingNode   75.77
	    MeridianAngle   23.00  # standard meridian
	}
}

70890 # Proxima Cen
{
	RA 217.429167
	Dec -62.679444
	Distance 4.242
	SpectralType "M5.0V"
	AppMag 11.05
}

Barycenter "Rigil Kentaurus:Toliman:ALF Cen:Gliese 559"
{
	RA  219.899437 # mass ratio 1.12:0.93
	Dec -60.835401 #
	Distance 4.365
}

71683 # ALF Cen A
{
	OrbitBarycenter "ALF Cen"
	SpectralType "G2V"
	AppMag 0.01
 
	EllipticalOrbit {			   
		Period           79.85
		SemiMajorAxis    10.68 # mass ratio 1.12:0.93
		Eccentricity      0.52
		Inclination      82.22
		AscendingNode    67.30
		ArgOfPericenter   4.02
		MeanAnomaly     200.13
	}			 
}

71681 # ALF cen B
{
	OrbitBarycenter "ALF Cen"
	SpectralType "K0V"
	AppMag 1.34

	EllipticalOrbit {			   
		Period           79.85
		SemiMajorAxis    12.87 # mass ratio 1.12:0.93
		Eccentricity      0.52
		Inclination      82.22
		AscendingNode    67.30
		ArgOfPericenter 184.02
		MeanAnomaly     200.13
	}			 
}

87937 # Barnard's Star
{
	RA 269.452083
	Dec 4.693333
	Distance 5.979
	SpectralType "M3.5V"
	AppMag 9.57
}

"CN Leo:Gliese 406:Wolf 359"
{
	RA 164.121783
	Dec 7.014722
	Distance 7.782
	SpectralType "M5.5V"
	AppMag 13.53
}

54035 # Lalande 21185
{
	RA 165.834167
	Dec 35.970000
	Distance 8.294
	SpectralType "M2.0V"
	AppMag 7.47
}

Barycenter 32349 "Sirius:Alhabor:ALF CMa:9 CMa:Gliese 244:ADS 5423"
{
	RA 101.287083
	Dec -16.716111
	Distance 8.583
}

"Sirius A:Alhabor A:ALF CMa A:9 CMa A:Gliese 244 A:ADS 5423 A"
{
	OrbitBarycenter "Sirius"
	SpectralType "A1V"
	AppMag -1.43

	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
	}
}

"Sirius B:Alhabor B:ALF CMa B:9 CMa B:Gliese 244 B:ADS 5423 B"
{
	OrbitBarycenter "Sirius"
	SpectralType "DA2"
	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
	}
}

Barycenter "Gliese 65:Luyten 726-8"
{
	RA 24.755529
	Dec -17.950278
	Distance 8.728
}

"BL Cet:Gliese 65 A:Luyten 726-8 A"
{
	OrbitBarycenter "Gliese 65"
	SpectralType "M5.5V"
	AppMag 12.61

	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
	}
}

"UV Cet:Gliese 65 B:Luyten 726-8 B"
{
	OrbitBarycenter "Gliese 65"
	SpectralType "M6.0V"
	AppMag 13.06

	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
	}
}

92403 # Ross 154
{
	RA 282.455833
	Dec -23.836111
	Distance 9.672
	SpectralType "M3.5V"
	AppMag 10.44
}

"HH And:Gliese 905:Ross 248"
{
	RA 355.479875
	Dec 44.177222
	Distance 10.310
	SpectralType "M5.5V"
	AppMag 12.29
}

16537 # Eps Eri
{
	RA 53.232500
	Dec -9.458333
	Distance 10.480
	SpectralType "K2V"
	AppMag 3.73
}

114046 # Lacaille 9352
{
	RA 346.466667
	Dec -35.853056
	Distance 10.691
	SpectralType "M1.0V"
	AppMag 7.34
}

57548 # Ross 128
{
	RA 176.935000
	Dec 0.804444
	Distance 10.940
	SpectralType "M4.0V"
	AppMag 11.16
}

# 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 "Gliese 866:Luyten 789-6"
{
	RA 339.640833
	Dec -15.300806
	Distance 11.266
}

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
	}
}

"EZ Aqr:Gliese 866 Aa:Luyten 789-6 Aa"
{
	OrbitBarycenter "Gliese 866 A"
	SpectralType "M5.0V"
	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
	}
}

"Gliese 866 Ab:Luyten 789-6 Ab"
{
	OrbitBarycenter "Gliese 866 A"
	SpectralType "M6V" # from apparent magnitude
	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
		ArgOfPericenter 180
	}
}

"Gliese 866 B:Luyten 789-6 B"
{
	OrbitBarycenter "Gliese 866"
	SpectralType "M5V" # 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
	}
}

Barycenter "61 Cyg:Gliese 820:ADS 14636"
{
	RA 316.714507   # mass ratio 0.7:0.63
	Dec 38.738139   #
	Distance 11.401
}

104214 "61 Cyg A:V1803 Cyg:Gliese 820 A:ADS 14636 A"
{
	OrbitBarycenter "61 Cyg"
	SpectralType "K5V"
	AppMag 5.20

	EllipticalOrbit {
		Period          659
		SemiMajorAxis   40.40 # mass ratio 0.7:0.63
		Eccentricity	0.48
		Inclination	132
		AscendingNode   165
		ArgOfPericenter 195
		MeanAnomaly     165
	}
}

104217 "61 Cyg B:Gliese 820 B:ADS 14636 B"
{
	OrbitBarycenter "61 Cyg"
	SpectralType "K7V"
	AppMag 6.03

	EllipticalOrbit {
		Period          659
		SemiMajorAxis   44.90 # mass ratio 0.7:0.63
		Eccentricity	0.48
		Inclination	132
		AscendingNode   165
		ArgOfPericenter 15
		MeanAnomaly     165
	}
}

Barycenter 37279 "Procyon:Elgomaisa:ALF CMi:10 CMi:Gliese 280:ADS 6251"
{
	RA 114.82724
	Dec 5.2275076
	Distance 11.438
}

"Procyon A:Elgomaisa A:ALF CMi A:10 CMi A:Gliese 280 A:ADS 6251 A"
{
	OrbitBarycenter "Procyon"
	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
	}
}

"Procyon B:Elgomaisa B:ALF CMi B:10 CMi B:Gliese 280 B:ADS 6251 B"
{
	OrbitBarycenter "Procyon"
	SpectralType "DA"
	AppMag 10.70

	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
	}
}

Barycenter "Gliese 725:ADS 11632:Struve 2398"
{
	RA 280.701371   # mass ratio 0.35:0.26
	Dec 59.624455   #
	Distance 11.492
}

91768 "Gliese 725 A:ADS 11632 A:Struve 2398 A"
{
	OrbitBarycenter "Gliese 725"
	SpectralType "M3.0V"
	AppMag 8.90

	EllipticalOrbit {
		Period          408
		SemiMajorAxis   20.91 # mass ratio 0.35:0.26
		Eccentricity	0.53
		Inclination	112
		AscendingNode   146.1
		ArgOfPericenter 243.5
		MeanAnomaly     198.5
	}
}

91772 "Gliese 725 B:ADS 11632 B:Struve 2398 B"
{
	OrbitBarycenter "Gliese 725"
	SpectralType "M3.5V"
	AppMag 9.69

	EllipticalOrbit {
		Period          408
		SemiMajorAxis   28.14 # mass ratio 0.35:0.26
		Eccentricity	0.53
		Inclination	112
		AscendingNode   146.1
		ArgOfPericenter 63.5
		MeanAnomaly     198.5
	}
}

Barycenter 1475 "Gliese 15:ADS 246:Groombridge 34"
{
	RA 4.595417
	Dec 44.023056
	Distance 11.654
}

"GX And:Gliese 15 A:ADS 246 A:Groombridge 34 A"
{
	OrbitBarycenter "Groombridge 34"
	SpectralType "M1.5V"
	AppMag 8.08

	EllipticalOrbit {
		Period          2600
		SemiMajorAxis   36.1   # mass ratio 0.49:0.16
		Eccentricity	0
		Inclination	67.9
		AscendingNode   308.4
		MeanLongitude   23.0
	}
}

"GQ And:Gliese 15 B:ADS 246 B:Groombridge 34 B"
{
	OrbitBarycenter "Groombridge 34"
	SpectralType "M3.5V"
	AppMag 11.06

	EllipticalOrbit {
		Period          2600
		SemiMajorAxis   110.7  # mass ratio 0.49:0.16
		Eccentricity	0
		Inclination	67.9
		AscendingNode   308.4
		MeanLongitude   203.0
	}
}

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
}

108870 "EPS Ind A:Gliese 845 A"
{
	RA 330.82266
	Dec -56.779804
	Distance 11.815
	SpectralType "K4V"
	AppMag 4.68
}

# 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)
Barycenter "EPS Ind B:CI Ind:Gliese 845 B"
{
	RA 331.043833
	Dec -56.782694
	Distance 11.815
}

"EPS Ind Ba:CI Ind A:Gliese 845 Ba"
{
	OrbitBarycenter "EPS Ind B"
	SpectralType "T1V"
	AbsMag 25.8 # for approximate radius in Celestia

	EllipticalOrbit {
		Period 		15.5 # approximate orbit
		SemiMajorAxis	0.99 # mass ratio 47:28J
	}
}

"EPS Ind Bb:CI Ind B:Gliese 845 Bb"
{
	OrbitBarycenter "EPS Ind B"
	SpectralType "T6V"
	AbsMag 33.5 # for approximate radius in Celestia

	EllipticalOrbit {
		Period 		15.5 # approximate orbit
		SemiMajorAxis	1.66 # mass ratio 47:28J
		ArgOfPericenter 180
	}
}

"DX Cnc:GJ 1111:Giclas 51-15"
{
	RA 127.456125
	Dec 26.775611
	Distance 11.826
	SpectralType "M6.0V"
	AppMag 14.90
}

8102 # Tau Cet
{
	RA 26.017083
	Dec -15.937500
	Distance 11.905
	SpectralType "G8.5V"
	AppMag 3.49
}

"GJ 1061:Luyten 372-58:RECONS 1"
{
	RA 53.998750
	Dec -44.512500
	Distance 11.991
	SpectralType "M5.0V"
	AppMag 13.09
}

5643 # Luyten 725-032
{
	RA 18.127500
	Dec -16.999167
	Distance 12.121
	SpectralType "M4.0V"
	AppMag 12.10
}

36208 # Luyten's Star
{
	RA 111.852083
	Dec 5.225833
	Distance 12.251
	SpectralType "M3.5V"
	AppMag 9.85
}

# 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 J1845-6357:SCR 1845-6357:2MASS J18450541-6357475:2MASS 1845-6357"
{
	RA 281.260833
	Dec -63.964444
	Distance 12.569
}

"SCR J1845-6357 A:SCR 1845-6357 A:2MASS J18450541-6357475 A:2MASS 1845-6357 A"
{
	OrbitBarycenter "SCR J1845-6357"
	SpectralType "M8.5V"
	AppMag 17.40

	EllipticalOrbit {
		Period 		23.5 # estimate
		SemiMajorAxis	1.6  # estimated mass ratio 0.07:0.045
		ArgOfPericenter 180
	}
}

"SCR J1845-6357 B:SCR 1845-6357 B:2MASS J18450541-6357475 B:2MASS 1845-6357 B"
{
	OrbitBarycenter "SCR J1845-6357"
	SpectralType "T6V"
	AbsMag 33.5 # for approximate radius in Celestia

	EllipticalOrbit {
		Period 		23.5 # estimate
		SemiMajorAxis	2.4  # estimated mass ratio 0.07:0.045
	}
}

"Teegarden's Star:2MASS J02530084+1652532:2MASS 0253+1652:SO J025300.5+165258:SO 0253+1652"
{
	RA 43.253613
	Dec 16.881389
	Distance 12.573
	SpectralType "M6.5V"
	AppMag 15.14
}

24186 # Kapteyn's Star
{
	RA 77.919167
	Dec -45.018333
	Distance 12.757
	SpectralType "M2.0VI"
	AppMag 8.85
}

105090 # Lacaille 8760
{
	RA 319.313750
	Dec -38.867500
	Distance 12.869
	SpectralType "K9.0V"
	AppMag 6.67
}

"DENIS 1048-3956:RECONS 2:2MASS J10481463-3956062:2MASS 1048-3956"
{
	Texture "browndwarf.*"
	RA 162.061250
	Dec -39.935000
	Distance 13.124
	SpectralType "M8.5V"
	AppMag 17.39
}

Barycenter 110893 "Gliese 860:ADS 15972:Kruger 60"
{
	RA 336.997917
	Dec 57.695833
	Distance 13.149
}

"Gliese 860 A:ADS 15972 A:Kruger 60 A"
{
	OrbitBarycenter "Kruger 60"
	SpectralType "M3.0V"
	AppMag 9.79

	EllipticalOrbit {
		Period           44.64
		SemiMajorAxis     3.53 # mass ratio 0.30:0.17
		Eccentricity      0.41
		Inclination      34.04
		AscendingNode   120.09
		ArgOfPericenter 269.84
		MeanAnomaly     239.52
	}
}

"DO Cep:Gliese 860 B:ADS 15972 B:Kruger 60 B"
{
	OrbitBarycenter "Kruger 60"
	SpectralType "M4.0V"
	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
	}
}

Barycenter 30920 "Gliese 234:Ross 614"
{
	RA  97.347500
	Dec -2.813889
	Distance 13.343
}

"V577 Mon:Gliese 234 A:Ross 614 A"
{
	OrbitBarycenter "Ross 614"
	SpectralType "M4.5V"
	AppMag 11.18

	EllipticalOrbit {
		Period            16.5
		SemiMajorAxis     1.31 # mass ratio 0.22:0.09
		Eccentricity      0.38
		Inclination      54.18
		AscendingNode    71.17
		ArgOfPericenter 130.67
		MeanAnomaly       0.00
	}
}

"Gliese 234 B:Ross 614 B"
{
	OrbitBarycenter "Ross 614"
	SpectralType "M7V"
	AppMag 14.26

	EllipticalOrbit {
		Period            16.5
		SemiMajorAxis     3.19 # mass ratio 0.22:0.09
		Eccentricity      0.38
		Inclination      54.18
		AscendingNode    71.17
		ArgOfPericenter 310.67
		MeanAnomaly       0.00
	}
}

# 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"
{
	RA 110.613750
	Dec -5.675000
	Distance 13.367
	SpectralType "T9.5" # actually T10
	AppMag 36 # for approximate radius in Celestia
}

80824 # Wolf 1061
{
	RA 247.575417
	Dec -12.662500
	Distance 13.916
	SpectralType "M3.5V"
	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"
	AppMag 8.54
}

Barycenter "Gliese 473:Wolf 424"
{
	RA 188.321667
	Dec 9.020833
	Distance 14.312
}

"Gliese 473 A:Wolf 424 A"
{
	OrbitBarycenter "Wolf 424"
	SpectralType "M5.0V"
	AppMag 13.25

	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
	}
}

"FL Vir:Gliese 473 B:Wolf 424 B"
{
	OrbitBarycenter "Wolf 424"
	SpectralType "M5.0V"
	AppMag 13.24

	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
	}
}

"TZ Ari:Gliese 83.1:Luyten 1159-16"
{
	RA 30.055000
	Dec 13.052222
	Distance 14.509
	SpectralType "M4.0V"
	AppMag 12.31
}

86162 # Gliese 687
{
	RA 264.107917
	Dec 68.339167
	Distance 14.794
	SpectralType "M3.0V"
	AppMag 9.17
}

"GJ 3622:LP 731-58"
{
	RA 162.052500
	Dec -11.337222
	Distance 14.805
	SpectralType "M6.5V"
	AppMag 15.73
}

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
}

Barycenter "GJ 1245 A"
{
	RA 298.475833
	Dec 44.415278
	Distance 14.812
}


"V1581 Cyg:GJ 1245 Aa"
{
	OrbitBarycenter "GJ 1245 A"
	SpectralType "M5.5V"
	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
	}
}

"GJ 1245 Ab"
{
	OrbitBarycenter "GJ 1245 A"
	SpectralType "M7.5V" # from low luminosity
	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
	}
}

"GJ 1245 B"
{
	RA 298.480000
	Dec 44.415556
	Distance 14.812
	SpectralType "M6.0V"
	AppMag 14.01
}

85523 # Gliese 674
{
	RA 262.166250
	Dec -46.895278
	Distance 14.818
	SpectralType "M2.5V"
	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"
	AppMag 10.18
}

"GJ 1002"
{
	RA 1.682500
	Dec -7.539444
	Distance 15.313
	SpectralType "M5.0V"
	AppMag 13.77
}

"GJ 3618:Luyten 143-23"
{
	RA 161.132500
	Dec -61.193889
	Distance 15.554
	SpectralType "M5.5V"
	AppMag 13.92
}

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
}

"Gliese 412 A:Lalande 21258 A"
{
	RA 166.369167
	Dec 43.526667
	Distance 15.859
	SpectralType "M1.0V"
	AppMag 8.77
}

"WX UMa:Gliese 412 B:Lalande 21258 B"
{
	RA 166.376667
	Dec 43.521667
	Distance 15.859
	SpectralType "M5.5V"
	AppMag 14.44
}

49908 # Groombridge 1618
{
	RA 152.842083
	Dec 49.454167
	Distance 15.869
	SpectralType "K7.0V"
	AppMag 6.59
}

"AD Leo:Gliese 388"
{
	RA 154.901667
	Dec 19.869444
	Distance 15.942
	SpectralType "M2.5V"
	AppMag 9.29
}

106440 # Luyten 354-89
{
	RA 323.391667
	Dec -49.008889
	Distance 16.144
	SpectralType "M1.5V"
	AppMag 8.66
}

"LP 944-20"
{
	Texture "browndwarf.*"
	RA 54.896667
	Dec -35.428056
	Distance 16.195
	SpectralType "M9.0V"
	AppMag 18.69
}

"DENIS 0255-4700:2MASS J02550357-4700509:2MASS 0255-4700"
{
	RA 43.765417
	Dec -47.014444
	Distance 16.197
	SpectralType "L7.5V"
	AppMag 22.92
}

Barycenter 19849 "Keid:OMI2 Eri:40 Eri:Gliese 166:ADS 3093" # Orbits of A & (BC) unknown
{
	RA 63.828351    # mass ratio 0.89:(0.5+0.20)
	Dec -7.655829   #
	Distance 16.255
}

"Keid A:OMI2 Eri A:40 Eri A:Gliese 166 A:ADS 3093 A"
{
	RA 63.817917
	Dec -7.652778
	Distance 16.255
	SpectralType "K0.5V"
	AppMag 4.43
}

Barycenter "Keid B-C:OMI2 Eri B-C:40 Eri B-C:Gliese 166 B-C"
{
	RA 63.841667
	Dec -7.659722
	Distance 16.255
}

"Keid B:OMI2 Eri B:40 Eri B:Gliese 166 B:ADS 3093 B"
{
	OrbitBarycenter "Keid B-C"
	SpectralType "DA4"
	AppMag 9.52

	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
	}
}

"Keid C:OMI2 Eri C:40 Eri C:DY Eri:Gliese 166 C:ADS 3093 C"
{
	OrbitBarycenter "Keid B-C"
	SpectralType "M4.0V"
	AppMag 11.24

	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
	}
}

112460 # EV Lac
{
	RA 341.702083
	Dec 44.330833
	Distance 16.455
	SpectralType "M3.5V"
	AppMag 10.22
}

86214 # Gliese 682
{
	RA 264.265417
	Dec -44.319167
	Distance 16.465
	SpectralType "M4.0V"
	AppMag 10.95
}

Barycenter 88601 "70 Oph:Gliese 702:ADS 11046:Struve 2272"
{
	RA 271.363750 
	Dec 2.500000
	Distance 16.644
}

"70 Oph A:Gliese 702 A:ADS 11046 A:Struve 2272 A"
{
	OrbitBarycenter "70 Oph"
	SpectralType "K0V"
	AppMag 4.21

	EllipticalOrbit {
		Period           88.34
		SemiMajorAxis    10.55 # mass ratio 0.88:0.73
		Eccentricity      0.50
		Inclination     116.40
		AscendingNode   331.07
		ArgOfPericenter 341.25
		MeanAnomaly      63.90
	}
}

"70 Oph B:Gliese 702 B:ADS 11046 B:Struve 2272 B"
{
	OrbitBarycenter "70 Oph"
	SpectralType "K5V"
	AppMag 6.01

	EllipticalOrbit {
		Period           88.34
		SemiMajorAxis    12.72 # mass ratio 0.88:0.73
		Eccentricity      0.50
		Inclination     116.40
		AscendingNode   331.07
		ArgOfPericenter 161.25
		MeanAnomaly      63.90
	}
}

97649 # Altair
{
	RA 297.695833
	Dec 8.868333
	Distance 16.692
	SpectralType "A7IV"
	AppMag 0.77

	RotationPeriod 10.4
	SemiAxes [ 1 0.88 1 ] # equatorial radius 14% greater than polar
}

Barycenter "GJ 1116"  # orbit of A & B unknown
{
	RA 134.562083   # mass ratio 0.11:0.10
	Dec 19.762724   #
	Distance 17.059
}

"EI Cnc:GJ 1116 A"
{
	RA 134.562083
	Dec 19.761944
	Distance 17.059
	SpectralType "M5.5V"
	AppMag 14.06
}

"GJ 1116 B:LP 426-40"
{
	RA 134.562083
	Dec 19.763611
	Distance 17.059
	SpectralType "M5.5V"
	AppMag 14.92
}

"GJ 3379:Giclas 99-49"
{
	RA 90.015000
	Dec 2.705556
	Distance 17.097
	SpectralType "M3.5V"
	AppMag 11.31
}

"GJ 3323:LP 656-38:RECONS 3"
{
	RA 75.487500
	Dec -6.946389
	Distance 17.357
	SpectralType "M4.0V"
	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 J09393548-2448279 A:2MASS 0939-2448 A"
{
	RA 144.897823
	Dec -24.80775
	Distance 17.414
	SpectralType "T8V"
	AbsMag 38 # estimate for radius in Celestia
}

"2MASS J09393548-2448279 B:2MASS 0939-2448 B"
{
	RA 144.897843
	Dec -24.80775
	Distance 17.414
	SpectralType "T8V"
	AbsMag 38 # estimate for radius in Celestia
}

57544 # Gliese 445
{
	RA 176.922500
	Dec 78.691111
	Distance 17.418
	SpectralType "M3.5V"
	AppMag 10.79
}

67155 # Lalande 25372
{
	RA 206.432500
	Dec 14.891389
	Distance 17.657
	SpectralType "M1.0V"
	AppMag 8.46
}

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
}

"Gliese 169.1 A:Stein 2051 A"
{
	RA 67.799375
	Dec 58.977167
	Distance 18.068
	SpectralType "M4V"
	AppMag 11.04
}

"Gliese 169.1 B:Stein 2051 B"
{
	RA 67.795063
	Dec 58.977167
	Distance 18.068
	SpectralType "DC5"
	AppMag 12.43
}

33226 # Wolf 294
{
	RA 103.704167
	Dec 33.268056
	Distance 18.313
	SpectralType "M3.0V"
	AppMag 10.02
}

"2MASS J18353790+3259545:2MASS 1835+3259"
{
	RA 278.907917
	Dec 32.998333
	Distance 18.480
	SpectralType "M8.5V"
	AppMag 18.27
}

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"
	AppMag 11.50
}

"2MASS J04151954-0935066:2MASS 0415-0935"
{
	RA 63.83125
	Dec -9.585
	Distance 18.709
	SpectralType "T8.0V"
	AbsMag 38  # for approximate radius in Celestia
}

96100 # Sig Dra
{
	RA 293.090000
	Dec 69.661111
	Distance 18.768
	SpectralType "G9V"
	AppMag 4.67
}

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
}

"Gliese 229 A:Luyten 668-21 A:LPM 230 A"
{
	RA 92.644231
	Dec -21.864643
	Distance 18.770
	SpectralType "M1.5V"
	AppMag 8.14
}

"Gliese 229 B:Luyten 668-21 B:LPM 230 B"
{
	RA 92.644643
	Dec -21.862692
	Distance 18.770
	SpectralType "T6.0V"
	AbsMag 33 # very approx
}

26857 # Ross 47
{
	RA 85.538750
	Dec 12.489444
	Distance 19.018
	SpectralType "M4.0V"
	AppMag 11.57
}

86990 # Luyten 205-128
{
	RA 266.642500
	Dec -57.319167
	Distance 19.063
	SpectralType "M3.0V"
	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"
	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"
	AppMag 17.45
}

Barycenter "Gliese 570:ADS 9446"
{
	RA  224.363404  # mass ratio 0.76:(0.49+0.34)
	Dec -21.413381  #
	Distance 19.116
}

73184 "KX Lib:Gliese 570 A:ADS 9446 A"	# fully specified orientation
{
	OrbitBarycenter "Gliese 570"
	SpectralType "K4V"
	AppMag 5.64

	EllipticalOrbit {
		Period         2130
		SemiMajorAxis    99.39  # mass ratio 0.76:(0.49+0.34)
		Eccentricity      0.2
		Inclination     142.62
		AscendingNode   191.56
		ArgOfPericenter 129.2
		MeanAnomaly      52.6
	}
}

Barycenter 73182 "Gliese 570 B-C"         # fully specified orientation
{
	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
		ArgOfPericenter 309.2
		MeanAnomaly      52.6
	}
}

"Gliese 570 B:ADS 9446 B"
{
	OrbitBarycenter "Gliese 570 B-C"
	SpectralType "M1.5V"
	AppMag 8.30

	EllipticalOrbit {
		Period            0.847
		SemiMajorAxis     0.34 # mass ratio 0.49:0.34
		Eccentricity      0.76
		Inclination      93.84
		AscendingNode   246.91
		ArgOfPericenter 214.71
		MeanAnomaly      34.00
	}
}

"Gliese 570 C:ADS 9446 C"
{
	OrbitBarycenter "Gliese 570 B-C"
	SpectralType "M3V"
	AppMag 9.96

	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
	}
}

"Gliese 570 D:ADS 9446 D"
{
	RA 224.312500
	Dec -21.363889
	Distance 19.116
	SpectralType "T7V"
	AbsMag 38 # very approx
}

"Gliese 754:Luyten 347-14"
{
	RA 290.200833
	Dec -45.558889
	Distance 19.280
	SpectralType "M4.0V"
	AppMag 12.23
}

76074 # Gliese 588
{
	RA 233.053750
	Dec -41.275556
	Distance 19.355
	SpectralType "M2.5V"
	AppMag 9.31
}

Barycenter 1242 "GJ 1005:Luyten 722-22"
{
	RA 3.867083
	Dec -16.133889
	Distance 19.374
}

"GJ 1005 A:Luyten 722-22 A"
{
	OrbitBarycenter "Luyten 722-22"
	SpectralType "M3.5V"
	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"
	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
	}
}

Barycenter 3821 "Achird:ETA Cas:24 Cas:Gliese 34:ADS 671"
{
	RA 12.27625
	Dec 57.815278
	Distance 19.388
}

"Achird A:ETA Cas A:24 Cas A:Gliese 34 A:ADS 671 A"
{
	OrbitBarycenter "Achird"
	SpectralType "G3V"
	AppMag 3.46

	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
	}
}

"Achird B:ETA Cas B:24 Cas B:Gliese 34 B:ADS 671 B"
{
	OrbitBarycenter "Achird"
	SpectralType "K7.0V"
	AppMag 7.21

	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
	}
}

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
}

Barycenter 84405 "36 Oph A-B:Gliese 663 A-B"
{
	RA 258.837500
	Dec -26.602778
	Distance 19.401
}

"36 Oph A:Gliese 663 A:ADS 10417 A"
{
	OrbitBarycenter "36 Oph A-B"
	SpectralType "K1.5V"
	AppMag 5.07

	EllipticalOrbit {
		Period          470.9
		SemiMajorAxis   38.8  # mass ratio 0.85:0.85
		Eccentricity    0.916
		Inclination	13.35
		AscendingNode   348.86
		ArgOfPericenter 271.0
		MeanAnomaly     246.3
	}
}

"36 Oph B:Gliese 663 B:ADS 10417 B"
{
	OrbitBarycenter "36 Oph A-B"
	SpectralType "K1V"
	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
	}
}

84478 "36 Oph C:V2215 Oph:Gliese 664:Gliese 663 C:ADS 10417 C"
{
	RA 259.055833
	Dec -26.546111
	Distance 19.401
	SpectralType "K5V"
	AppMag 6.32
}

117473 # Gliese 908
{
	RA 357.302083
	Dec 2.401111
	Distance 19.412
	SpectralType "M1.0V"
	AppMag 8.98
}

37766 # Ross 882 
{
	RA 116.167500
	Dec 3.552500
	Distance 19.509
	SpectralType "M4.0V"
	AppMag 11.19
}

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  #
	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
	SpectralType "K2.5V"
	AppMag 5.31
}

"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"
	AppMag 11.50
}

15510 # 82 Eri
{
	RA 49.981667
	Dec -43.069722
	Distance 19.711
	SpectralType "G8V"
	AppMag 4.26
}

"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"
	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)
Barycenter 34603 "Gliese 268:Ross 986"
{
	RA 107.5075
	Dec 38.529444
	Distance 19.960
}

"QY Aur:Gliese 268 A:Ross 986 A"
{
	OrbitBarycenter "Ross 986"
	SpectralType "M4.5V"
	AppMag 12.05

	EllipticalOrbit {
		Period          0.02856 # 10.43dy
		SemiMajorAxis   0.03    # mass ratio 0.17:0.16
		ArgOfPericenter 180
	}
}

"Gliese 268 B:Ross 986 B"
{
	OrbitBarycenter "Ross 986"
	SpectralType "M6V"
	AppMag 12.45

	EllipticalOrbit {
		Period          0.02856 # 10.43dy
		SemiMajorAxis   0.03    # mass ratio 0.17:0.16
	}
}

"2MASS J09373487+2931409:2MASS 0937+2931"
{
	RA 144.391667
	Dec 29.516667
	Distance 19.973
	SpectralType "T6.0V"
	AbsMag 33  # for approximate radius in Celestia
}

99701 # Gliese 784
{
	RA 303.472500
	Dec -45.163889
	Distance 20.215
	SpectralType "M0.0V"
	AppMag 7.95
}

71253 # Gliese 555
{
	RA 218.570000
	Dec -12.519444
	Distance 20.286
	SpectralType "M4.0V"
	AppMag 11.32
}

Barycenter 116132 "Gliese 896"
{
	RA 352.967500
	Dec 19.937222
	Distance 20.401
}

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
		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
		AscendingNode   138.8
		ArgOfPericenter 299.1
		MeanAnomaly     352.0
	}
}

"EQ Peg:Gliese 896 Aa"
{
	OrbitBarycenter "Gliese 896 A"
	SpectralType "M3.5V"
	AppMag 10.27

	EllipticalOrbit {
		Period          3.5	# "of the order of a few years"
		SemiMajorAxis   0.5	# mass ratio 0.34:0.13
		ArgOfPericenter 180
		Inclination	20	# to match orbital plane
		AscendingNode   140     # of system
	}

}

"Gliese 896 Ab"
{
	OrbitBarycenter "Gliese 896 A"
	SpectralType "M7V"              # from apparent magnitude
	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
	}
}

"Gliese 896 Ba"
{
	OrbitBarycenter "Gliese 896 B"
	SpectralType "M4.5V"
	AppMag 12.21

	EllipticalOrbit {
		Period          4.1	# "of the order of a few years"
		SemiMajorAxis   0.6	# mass ratio 0.16:0.09
		ArgOfPericenter 180
		Inclination	20	# to match orbital plane
		AscendingNode   140     # of system
	}
}

"Gliese 896 Bb"
{
	OrbitBarycenter "Gliese 896 B"
	SpectralType "M9V"              # from apparent magnitude
	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
	}
}

74995 # Wolf 562
{
	RA 229.861667
	Dec -7.722222
	Distance 20.669
	SpectralType "M3.0V"
	AppMag 10.57
}

"LHS 2090:LP 368-128"
{
	RA 135.098333
	Dec 21.834722
	Distance 20.792
	SpectralType "M6.0V"
	AppMag 16.10
}

"LHS 337:Luyten 471-42:GJ 3737"
{
	RA 189.704583
	Dec -38.381667
	Distance 20.804
	SpectralType "M4.0V"
	AppMag 12.75
}

Barycenter 84140 "Gliese 661:BD+45 2505"
{
	RA 258.032917
	Dec 45.665833
	Distance 20.865
}

"Gliese 661 A:BD+45 2505 A"
{
	OrbitBarycenter "Gliese 661"
	SpectralType "M3V"
	AppMag 9.93

	EllipticalOrbit {
		Period           12.96
		SemiMajorAxis     2.43 # mass ratio 0.36:0.35
		Eccentricity      0.75
		Inclination      27.34
		AscendingNode    65.56
		ArgOfPericenter 138.70
		MeanAnomaly     248.89
	}
}

"Gliese 661 B:BD+45 2505 B"
{
	OrbitBarycenter "Gliese 661"
	SpectralType "M4V"
	AppMag 10.35

	EllipticalOrbit {
		Period           12.96
		SemiMajorAxis     2.50 # mass ratio 0.36:0.35
		Eccentricity      0.75
		Inclination      27.34
		AscendingNode    65.56
		ArgOfPericenter 318.70
		MeanAnomaly     248.89
	}
}

# 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 J01365662+0933473:2MASS 0136+0933:SIMP J013656.5+093347"
{
	RA 24.235833
	Dec 9.563056
	Distance 20.874
	SpectralType "T2.5V"
	AbsMag 27  # for approximate radius in Celestia
}

"Gliese 223.2:LP 658-2"
{
	RA 88.790417
	Dec -4.171389
	Distance 20.901
	SpectralType "DZ9"
	AppMag 14.47
}

"GJ 3959:Giclas 180-60"
{
	RA 247.826667
	Dec 40.865000
	Distance 20.908
	SpectralType "M5.0V"
	AppMag 14.76
}

# 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
}

Barycenter 82817 "Gliese 644 A-B:Wolf 630 A-B"
{
	RA 253.870000
	Dec -8.336389
	Distance 21.048
}

"V1054 Oph:Gliese 644 A:Wolf 630 A"
{
	OrbitBarycenter "Wolf 630 A-B"
	SpectralType "M2.5V"
	AppMag 9.72

	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
	}
}

Barycenter "Gliese 644 B:Wolf 630 B"
{
	OrbitBarycenter "Wolf 630 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
	}
}

"Gliese 644 Ba:Wolf 630 Ba"
{
	OrbitBarycenter "Wolf 630 B"
	SpectralType "M3V"
	AppMag 10.37

	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
	}
}

"Gliese 644 Bb:Wolf 630 Bb"
{
	OrbitBarycenter "Wolf 630 B"
	SpectralType "M4V"
	AppMag 10.87

	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
	}
}

"Gliese 644 C:Wolf 630 C:VB 8"
{
	RA 253.899167
	Dec -8.394444
	Distance 21.048
	SpectralType "M7V"
	AppMag 16.78
}

82809 "Gliese 643:Wolf 629"
{
	RA 253.855000
	Dec -8.322500
	Distance 21.048
	SpectralType "M3.5V"
	AppMag 11.80
}

80459 # Gliese 625
{
	RA 246.352500
	Dec 54.304167
	Distance 21.298
	SpectralType "M1.5V"
	AppMag 10.10
}

"GJ 1128:LHS 271:Luyten 100-115"
{
	RA 145.693333
	Dec -68.885000
	Distance 21.311
	SpectralType "M4.0V"
	AppMag 12.74
}

"GL Vir:GJ 1156:Luyten 1190-34"
{
	RA 184.751250
	Dec 11.125278
	Distance 21.332
	SpectralType "M4.5V"
	AppMag 13.80
}

114622 # Gliese 892
{
	RA 348.320833
	Dec 57.168333
	Distance 21.340
	SpectralType "K3V"
	AppMag 5.57
}

"GJ 3877:LP 914-54"
{
	RA 224.160417
	Dec -28.164167
	Distance 21.389
	SpectralType "M7.0V"
	AppMag 17.05
}

53767 # Ross 104
{
	RA 165.017917
	Dec 22.833056
	Distance 21.843
	SpectralType "M2.5V"
	AppMag 10.02
}

# 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 106106 "Gliese 829:Ross 775"
{
	RA 322.400816
	Dec 17.642376
	Distance 21.889
}

"Gliese 829 A:Ross 775 A"
{
	OrbitBarycenter "Ross 775"
	SpectralType "M3.0V"
	AppMag 11.05

	EllipticalOrbit {
		Period          0.146	# 53.2dys
		SemiMajorAxis   0.11	# estimated from mass ratio 0.26:0.26
		ArgOfPericenter 180
	}
}

"Gliese 829 B:Ross 775 B"
{
	OrbitBarycenter "Ross 775"
	SpectralType "M3.5V"
	AppMag 11.05

	EllipticalOrbit {
		Period          0.146	# 53.2dys
		SemiMajorAxis   0.11	# estimated from mass ratio 0.26:0.26
	}
}

# 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)
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"
	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
	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
	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"
	AppMag 11.65
}

113296 # Ross 671
{
	RA 344.147643
	Dec 16.554122
	Distance 22.284
	SpectralType "M1.5V"
	AppMag 8.65
}

"Gliese 299:Ross 619"
{
	RA 122.989583
	Dec 8.774444
	Distance 22.294
	SpectralType "M4.0V"
	AppMag 12.82
}

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
}

Barycenter 84709 "Gliese 667 A-B:CD-34 11626 A-B"
{
	RA  259.734835
	Dec -34.989574
	Distance 22.296
}

"Gliese 667 A:CD-34 11626 A"
{
	OrbitBarycenter "Gliese 667 A-B"
	SpectralType "K4V"
	AppMag 5.90

	EllipticalOrbit {
		Period           42.15
		SemiMajorAxis     5.75 # mass ratio 0.68:0.59
		Eccentricity      0.58
		Inclination     136.65
		AscendingNode   305.37
		ArgOfPericenter 183.60
		MeanAnomaly     205.84
	}
}

"Gliese 667 B:CD-34 11626 B"
{
	OrbitBarycenter "Gliese 667 A-B"
	SpectralType "K5V"
	AppMag 5.90

	EllipticalOrbit {
		Period           42.15
		SemiMajorAxis     6.62 # mass ratio 0.68:0.59
		Eccentricity      0.58
		Inclination     136.65
		AscendingNode   305.37
		ArgOfPericenter   3.60
		MeanAnomaly     205.84
	}
}

"Gliese 667 C:CD-34 11626 C"
{
	RA 259.739583
	Dec -34.994167
	Distance 22.296
	SpectralType "M1.5V"
	AppMag 10.26
}

14101 "GJ 3192:LP 771-95 A:Luyten 730-18:RECONS 4"
{
	RA 45.46411209
	Dec -16.593372777
	Distance 22.680
	SpectralType "M2.5V"
	AppMag 11.22
}

"GJ 3193:LP 771-95 B:LP 771-96"
{
	RA 45.46547306
	Dec -16.59479288
	Distance 22.680
	SpectralType "M3.5V"
	AppMag 11.79
}

"LP 771-95 C"
{
	RA 45.46432292
	Dec -16.59359277
	Distance 22.680
	SpectralType "M5V"
	AppMag 12.65
}

# =============================================================
# Additional stars between end of RECONS Top 100 and 25 ly: 
# Non-Hipparcos and Hip stars with additional definitions

"Gliese 293:Luyten 97-12"
{
	RA 118.311250
	Dec -67.791944
	Distance 23.099
	SpectralType "DQ9"
	AppMag 14.08
}

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          60
		SemiMajorAxis   1.3     # mass ratio 0.81:0.08
		Eccentricity    0.75
		Inclination	82	# "nearly face-on orbit"
		AscendingNode   310	#
	}
}

"Gliese 105 Ab"
{
	OrbitBarycenter "Gliese 105 A"
	SpectralType "M7.5V"
	AppMag 16.90

	EllipticalOrbit {
		Period          60
		SemiMajorAxis   13.7    # mass ratio 0.81:0.08
		Eccentricity    0.75
		Inclination	82	# "nearly face-on orbit"
		AscendingNode   310	#
		ArgOfPericenter 180
	}
}

"BX Cet:Gliese 105 B"
{
	RA 39.057917
	Dec 6.868333
	Distance 23.420
	SpectralType "M3.5V"
	AppMag 11.66
}

"GJ 1286"
{
	RA 353.794583
	Dec -2.390278
	Distance 23.584
	SpectralType "M5.5V"
	AppMag 14.67
}

"GJ 4083:LP 71-165"
{
	RA 274.740417
	Dec 66.192222
	Distance 23.721
	SpectralType "M4.5V"
	AppMag 13.49
}

# 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 J15074769-1627386:2MASS 1507-1627"
{
	RA 226.948709
	Dec -16.460722
	Distance 23.912
	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"
	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)
Barycenter 83945 "GJ 3991:Giclas 203-47"
{
	RA 257.380309
	Dec 43.682026
	Distance 24.284
}

"GJ 3991 A:Giclas 203-47 A"
{
	OrbitBarycenter "Giclas 203-47"
	SpectralType "M3.5V"
	AppMag 11.80

	EllipticalOrbit {
		Period          0.04	# 15 days
		SemiMajorAxis   0.6	# estimated from mass ratio 0.3:0.5
		Eccentricity    0.07
		ArgOfPericenter 180
	}
}

"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
		SemiMajorAxis   0.4	# estimated from mass ratio 0.3:0.5
		Eccentricity    0.07
	}
}

"GJ 1224"
{
	RA 271.887083
	Dec -15.964167
	Distance 24.598
	SpectralType "M4.5V"
	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
Barycenter 5336 "MU Cas:30 Cas:Gliese 53"
{
	RA 17.053838
	Dec 54.924228
	Distance 24.638
}

"MU Cas A:30 Cas A:Gliese 53 A"
{
	OrbitBarycenter "MU Cas"
	SpectralType "G5VI"
	AppMag 5.17

	EllipticalOrbit {		# fully specified orientation
		Period          21.753
		SemiMajorAxis   1.437   # mass ratio 0.742:0.173
		Eccentricity    0.561
		Inclination	28.0
		AscendingNode   334.7
		ArgOfPericenter 135.0
		MeanAnomaly     41.52
	}
}

"MU Cas B:30 Cas B:Gliese 53 B"
{
	OrbitBarycenter "MU Cas"
	SpectralType "MVI"
	AppMag 11.00

	EllipticalOrbit {		# fully specified orientation
		Period          21.753
		SemiMajorAxis   6.165   # mass ratio 0.742:0.173
		Eccentricity    0.561
		Inclination	28.0
		AscendingNode   334.7
		ArgOfPericenter 315.0
		MeanAnomaly     41.52
	}
}

"GJ 3378:Luyten 1813-21"
{
	RA 90.290417
	Dec 59.598333
	Distance 24.691
	SpectralType "M3.5V"
	AppMag 11.71
}

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
	}
}

Modify 113368 # Fomalhaut 
{
	UniformRotation
	{
	    Inclination    81.8    # rotation pole matches debris disk
	    AscendingNode  176.6   # Bouquin et al. (2009) A&A 498, L41-44
# (http://www.aanda.org/index.php?option=article&access=doi&doi=10.1051/0004-6361/200911854)
 	}
}

#========================================================================
# Nearby multiple star with poor Hipparcos parallax

Barycenter 55203 "Alula Australis:XI UMa:53 UMa:Gliese 423:ADS 8119"
{
	RA 169.54545
	Dec 31.529134
	Distance 27.294
}

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
	}
}

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
		AscendingNode   192.13
		ArgOfPericenter 189.69
		MeanAnomaly     29.62
	}
}

"Alula Australis Aa:XI UMa Aa:53 UMa Aa:Gliese 423 Aa"
{
	OrbitBarycenter "Alula Australis A"
	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
	}
}

"Alula Australis Ab:XI UMa Ab:53 UMa Ab:Gliese 423 Ab"
{
	OrbitBarycenter "Alula Australis A"
	SpectralType "M2V" # from estimated mass of 0.4
	AbsMag 9.3         # 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
	}
}

"Alula Australis Ba:XI UMa Ba:53 UMa Ba:Gliese 423 Ba"
{
	OrbitBarycenter "Alula Australis B"
	SpectralType "G0V"
	AppMag 4.8

	EllipticalOrbit {
		Period          0.0109 # 3.98dy
		SemiMajorAxis   0.004  # mass ratio 1.05:0.08
		Eccentricity    0
		ArgOfPericenter 180
	}
}

"Alula Australis Bb:XI UMa Bb:53 UMa Bb:Gliese 423 Bb"
{
	OrbitBarycenter "Alula Australis B"
	SpectralType "L"  # brown dwarf
	AbsMag 21         # for approximate radius in Celestia

	EllipticalOrbit {
		Period          0.0109 # 3.981dy
		SemiMajorAxis   0.056  # mass ratio 1.05:0.08
		Eccentricity    0
	}
}

# 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"
{
	RA 169.53272
	Dec 31.539614
	Distance 27.294
	SpectralType "M7V"  # from luminosity
	AppMag 15
}

#======================================================
# 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

85605
{
	RA 262.401250
	Dec 24.653055
	Distance 180 # from spectral class and ap. mag.
	SpectralType "K5"
	AppMag 11.15
}