Data for 47 Ursae Majoris

(HR4277, G0V)
(2000 Coordinates: RA= 10 59 27.9, Dec= +40 25 49)



47 UMa velocity curve with the orbital fit for a period P=1094 days. Error bars are shown. The RMS of the residuals to the orbital fit are 9 m/s. The derived minimum companion mass is: M sin i = 2.41 M jup.




47 UMa b orbital parameters

ParameterBest-Fit
Period1094 +/- 15 days
Half amplitude (K)47.7 +/- 3 m/s
Semimajor Axis2.10 AU
Eccentricity0.09 +/- 0.03
M sini (M jup)2.41

47 Uma Compared to the Sun

ParameterSun47 UMaSource
T (Kelvin)57805882Edvardsson et al, 1993, A&A,;275,101.
Mv4.794.40Cayrel de Stobel et al,1992, A&AS,;95, 273.
Log grav (cgs)4.454.31Blackwell et al, 1994, A&A,;282, 899
Spec. TypeG2VG0VGarcia 1989, Bull. Inf. Centre Donnees Stellaires, 36, 27.
R'hk-4.937-5.26Duncan 1981
P rot (day)25.416Soderblom 1985, AJ, 90, 2103
Vsini Km/s1.83Soderblom 1993
[Fe/H]0.00+0.01Blackwell et al, 1994.
Age = 6.9 Gyr (Edvardsson et al. 1993)


A Planet Orbiting 47 UMa 1996, Astrophys. Journ. v.464, L153


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