GJ 581 e
Description: Gliese 581e or Gl 581e is an exoplanet orbiting within the Gliese 581 system, located 20.5 light-years away from Earth in the Libra constellation. It is the third planet discovered in the system and the first in order from the star.
Physical Properties
Mass (Jupiter mass): 0.00780295261650416 MJ
Radius (Jupiter radius): 0.123 RJ
Density: 5.19 g/cm³
Equilibrium Temperature: Unknown
Orbital Parameters
Orbital Period: 3.1481 days
Semi-major Axis: 0.02799 AU
Eccentricity: 0.012
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: e
Object ID: 3.10985
Host ID: 2.57422
Discovery Date: 2009-11
Discovery Year: 2009
Discovery Method: Radial Velocity
Discovery Locale: Ground
Discovery Facility: La Silla Observatory
Discovery Instrument: HARPS Spectrograph