GJ 581 c
Description: Gliese 581c is an exoplanet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star. With a mass about 6.8 times that of the Earth, it is classified as a super-Earth.
Physical Properties
Mass (Jupiter mass): 0.0214266561767715 MJ
Radius (Jupiter radius): 0.223 RJ
Density: 2.39 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 12.9211 days
Semi-major Axis: 0.0718 AU
Eccentricity: 0.032
Inclination: 47.0°
Host Star Properties
Host Star: GJ 581
Spectral Type: M3.0 V
Temperature: 3500.0 K
Stellar Mass: 0.3 M☉
Stellar Radius: 0.3 R☉
Discovery Information
Planet Letter: c
Object ID: 3.10984
Host ID: 2.57422
Discovery Date: 2007-07
Discovery Year: 2007
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: La Silla Observatory
Discovery Instrument: HARPS Spectrograph