"The ELODIE survey for northern extra-solar planets II: A Jovian planet on a long-period orbit around GJ 777A"
D. Naef, M. Mayor, S.G. Korzennik, D. Queloz, S. Udry, P. Nisenson, R.W. Noyes, T.M. Brown, J.-L. Beuzit, C. Perrier, J.-P. Sivan, 2003
A&A 410, 1051 (ADS)

Announced during the "Scientific Frontiers in Research on Extrasolar Planets" conference, Washington D.C., June the 19th 2002

Elodie data: red filled circles; AFOE data: green open circles
Top: Temporal Elodie and AFOE radial velocities
Black curve: best Keplerian fit
Blue dotted curve: circular orbit
Bottom: Residuals to the eccentric orbit.
Higher resolution image (408 kb)

Orbital solution (from Naef et al. 2003):

Object	Period (days)	T0 (JD - 2 400 000)	Eccentricity	V (km/s)	Omega (deg)	K1 (m/s)	m2sini (M_Jup)	a (AU)	N	Residuals (m/s)
GJ 777 A	3902 +/- 1758	50557 +/- 89	0.48 +/- 0.2	-45.350 +/- 0.004	361 +/- 13	20 +/- 3	1.33	4.8	56 (Elodie) + 13 (AFOE)	9.3

Stellar properties:

Parameter	Value	Reference
Sp. Type	G6IV	Hipparcos
pi (mas)	62.92	Hipparcos
d (pc)	15.9	Hipparcos
m_v (mag)	5.73	Hipparcos
B-V (mag)	0.749	Hipparcos
T_eff (K)	5590 +/- 50	Santos et al. 2003
M_v (mag)	4.72	-
L (L_sol)	1.13	-
log(g) (CGS)	4.48 +/- 0.15	Santos et al. 2003
M_1 (M_sol)	0.96	Santos et al. 2003
log(R'HK)	-5.05	Duncan et al. 1991
P_rot (d)	38	Naef et al. 2003
Vsini (km/s)	0.91	Elodie, Naef et al. 2003
Age (Gyr)	6.7	Naef et al. 2003
[Fe/H]	0.25	Santos et al. 2003

Links:

Extrasolar planet page

Planet Search and Stellar Kinematics group page

Geneva observatory

University of Geneva

 

stephane.udry@obs.unige.ch