Orbital Elements for Upsilon Andromedae

 
Orbital Parameters Table
Parameters Lick data AFOE data Combined Lick/AFOE
Companion b      
P (d) 4.6171 +- 0.0001 4.6171 +- 0.0003 4.6170 +- 0.0003
Tperi (JD) 2450315.34 +- 0.7 2450001.99 +- 0.51 2450002.24 +- 3.1
e 0.042 +- 0.030 0.042 +- 0.033 0.034 +- 0.15
omega (deg) 16.0 +- 139 63.8 +- 40 83.0 +- 243
K1 (m/s) 74.5 +- 2.3 75.6 +- 2.3 73.0 +- 5
a1 sin i (AU) 3.16e-5 3.21e-5 3.10e-5
ab (AU) 0.059 0.059 0.059
Mb sin i (MJup) 0.72 0.74 0.71
       
Companion c      
P (d) 242.0 +- 0.7 243.5 +- 1.0 241.2 +- 1.1
Tperi (JD) 2451131.24 +- 23.4 2450140.4 +- 8.3 2450154.9 +- 20.8
e 0.23 +- 0.06 0.22 +- 0.06 0.18 +- 0.11
omega (deg) 261.0 +- 47 219.2 +- 14 243.6 +- 33
K1 (m/s) 56.0 +- 2.5 53.7 +- 3.5 58.0 +- 7.9
a1 sin i (AU) 0.0012 0.0012 0.0013
ac (AU) 0.83 0.83 0.83
Mc sin i (MJup) 1.98 1.96 2.11
       
Companion d      
P (d) 1269.0 +- 8.5 1481.2 +- 35 1266.6 +- 30
Tperi (JD) 2453813.46 +- 32.0 2450046.8 +- 16.1 2451308.7 +- 40.5
e 0.36 +- 0.05 0.44 +- 0.05 0.41 +- 0.11
omega (deg) 236.0 +- 14.6 245.9 +- 5.9 247.7 +- 17.0
K1 (m/s) 69.5 +- 2.1 85.5 +- 4.0 72.9 +- 7.1
a1 sin i (AU) 0.0076 0.0105 0.0077
ad (AU) 2.50 2.78 2.50
Md sin i (MJup) 4.11 5.70 4.61
       
N(obs) 89 52 141
RMS residuals (m/s) 15.12 12.1 18.7


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__________________________________________________
Adam Contos  (acontos@cfa.harvard.edu)

Last modified: Fri Apr 23 19:07:15 1999