Exoplanet
GJ 581 b
Orbiting GJ 581
Overview
GJ 581 b is an exoplanet orbiting the star GJ 581, discovered in 2005 using the Radial Velocity method.
Key Measurements
Mass
20.50
Earth masses
0500 M⊕
Orbital Period
5.4
days
0.1d10,000d
Distance
6.3
parsecs
Nearby10,000 pc
Radius (Earth radii)
Unknown
Mass (Earth masses)
20.50
Measured
Equilibrium Temperature
Unknown
Orbital Period
5.37 days
Distance from Earth
6.3 pc (~21 ly)
Spectral Type
M3.0 V
Temperature
3500 K
Mass (Solar)
0.29 M☉
Radius (Solar)
0.30 R☉
Luminosity
-1.91 log L☉
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
229.8565°, -7.7227°
Discovery Method
Radial Velocity
Discovery Year
2005
Data Sources
Source ID: GJ 581 b