GJ 581 · M3.0 V
GJ 581 c
Rank #97 of the ranked catalogue · Discovered by Radial Velocity in 2007
HZ 0%measured
0.133
Earth-2.0 index
0.653
Earth Similarity Index
0%
Habitable-zone probability
2.50 R⊕
Radius
Planet
Mass6.810 M⊕measured
Bulk density2.390 g/cm³
Orbital period12.9211 days
Semi-major axis0.07180 au
Eccentricity0.032
Incident flux2.398 S⊕
Equilibrium temperature316.3 K
Maximum angular separation11.40 masReflected-light contrast 2.10e-7 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage67%0% median composite-to-default difference over shared parameters.
Host star & system
HostGJ 581
Spectral typeM3.0 V
Effective temperature3500 K
Radius0.302 R☉
Mass0.295 M☉
Distance6.3 pc / 20.5 ly
DiscoveryRadial Velocity, 2007