70 Vir b
Description: 70 Virginis b is an extrasolar planet approximately 60 light-years away in the constellation of Virgo. Announced in 1996 by Geoffrey Marcy and R. Paul Butler, 70 Virginis was one of the first stars confirmed to have planets orbiting it. When first announced, 70 Virginis b was considered to be within its star's habitable zone, but it was later confirmed that the planet has an eccentric orbit, closer to its parent.
Physical Properties
Mass (Jupiter mass): 7.49 MJ
Radius (Jupiter radius): 1.13 RJ
Density: 6.54 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 116.688 days
Semi-major Axis: 0.481 AU
Eccentricity: 0.3988
Inclination: Unknown
Host Star Properties
Host Star: 70 Vir
Spectral Type: G5V
Temperature: 5495.0 K
Stellar Mass: 1.09 M☉
Stellar Radius: 1.89 R☉
Discovery Information
Planet Letter: b
Object ID: 3.1093
Host ID: 2.57003
Discovery Date: 1996-06
Discovery Year: 1996
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: Lick Observatory
Discovery Instrument: Hamilton Echelle Spectrograph