Finding Earth 2.0
GJ 876 · M2.5V

GJ 876 b

Rank #897 of the ranked catalogue · Discovered by Radial Velocity in 1998

HZ 100%measured

0.107

Earth-2.0 index

0.380

Earth Similarity Index

100%

Habitable-zone probability

13.30 R⊕

Radius

Planet

Mass723.223 M⊕measured
Bulk density1.690 g/cm³
Orbital period61.1166 days
Semi-major axis0.20832 au
Eccentricity0.032
Incident flux0.286 S⊕
Equilibrium temperature185.8 K
Maximum angular separation44.56 masReflected-light contrast 7.08e-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 coverage58%0% median composite-to-default difference over shared parameters.

Host star & system

HostGJ 876
Spectral typeM2.5V
Effective temperature3294 K
Radius0.300 R☉
Mass0.320 M☉
Distance4.7 pc / 15.2 ly
DiscoveryRadial Velocity, 1998