GJ 436 · M2.5 V
GJ 436 b
Rank #1084 of the ranked catalogue · Discovered by Radial Velocity in 2004
HZ 0%measured
0.105
Earth-2.0 index
0.321
Earth Similarity Index
0%
Habitable-zone probability
4.17 R⊕
Radius
Planet
Mass22.100 M⊕measured
Bulk density1.800 g/cm³
Orbital period2.6439 days
Semi-major axis0.02910 au
Eccentricity0.138
Incident flux29.432 S⊕
Equilibrium temperature592.1 K
Transit-time σ at 20302.5 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation2.98 masReflected-light contrast 3.56e-6 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources6 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage75%0% median composite-to-default difference over shared parameters.
Host star & system
HostGJ 436
Spectral typeM2.5 V
Effective temperature3586 K
Radius0.455 R☉
Mass0.470 M☉
Distance9.8 pc / 31.8 ly
DiscoveryRadial Velocity, 2004