GJ 581 c
Orbiting GJ 581
GJ 581 c is an exoplanet orbiting the star GJ 581, discovered in 2007 using the Radial Velocity method.
Mass
6.81
Earth masses
Orbital Period
12.9
days
Distance
6.3
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
6.81
Measured
Equilibrium Temperature
Unknown
Parameter source: von Stauffenberg et al. 2024
Orbital Period
12.921+0.001−0.001days
Semi-Major Axis
0.0718+0.0008−0.0009au
Planet Mass (Earth masses)
6.81+0.21−1.16
Planet Mass (Jupiter masses)
0.0214+0.0007−0.0036
Eccentricity
0.0320+0.0270−0.0210
Argument of Periastron
16.0+61.0−89.0deg
Radial Velocity Semi-Amplitude
3.10+0.10−0.10m/s
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
2007
Source ID: GJ 581 c
GJ 581 c orbits GJ 581 and was reported in 2007 and was detected with the Radial Velocity method.
Published measurements list a mass of 6.81 Earth masses and an orbital period of 12.92 days.
Catalog data places the system at about 6.3 parsecs from Earth, a host star classified as M3.0 V, and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 581