GJ 1214 · M4 V
GJ 1214 b
Rank #420 of the ranked catalogue · Discovered by Transit in 2009
HZ 0%measured
0.116
Earth-2.0 index
0.418
Earth Similarity Index
0%
Habitable-zone probability
2.73 R⊕
Radius
Planet
Mass8.410 M⊕measured
Bulk density2.260 g/cm³
Orbital period1.5804 days
Semi-major axis0.01505 au
Eccentricity0.006
Incident flux17.200 S⊕
Equilibrium temperature517.7 K
Transit-time σ at 20300.1 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation1.03 masReflected-light contrast 5.72e-6 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources3 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage100%0% median composite-to-default difference over shared parameters.
Host star & system
HostGJ 1214
Spectral typeM4 V
Effective temperature3101 K
Radius0.216 R☉
Mass0.182 M☉
Distance14.6 pc / 47.8 ly
DiscoveryTransit, 2009