Finding Earth 2.0
GJ 317 · M3.5 V

GJ 317 b

Rank #3042 of the ranked catalogue · Discovered by Radial Velocity in 2007

HZ 0%measured

0.088

Earth-2.0 index

0.198

Earth Similarity Index

0%

Habitable-zone probability

13.30 R⊕

Radius

Planet

Mass794.500 M⊕measured
Bulk density1.860 g/cm³
Orbital period695.6900 days
Semi-major axis1.13800 au
Eccentricity0.083
Incident flux0.016 S⊕
Equilibrium temperature90.3 K
Maximum angular separation74.88 masReflected-light contrast 2.37e-8 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 317
Spectral typeM3.5 V
Effective temperature3496 K
Radius0.403 R☉
Mass0.402 M☉
Distance15.2 pc / 49.6 ly
DiscoveryRadial Velocity, 2007