Exoplanet
GJ 436 b
31.81 light-years
- Discovery
- Radial Velocity · 2004
- Radius
- 4.17 (+0.168 / −0.168) Earth radii
- Mass
- 22.1 (+2.3 / −2.3) Earth masses
- Orbital period
- 2.6439 (+5.7 × 10⁻⁷ / −5.7 × 10⁻⁷) days
- Semi-major axis
- 0.0291 (+1.5 × 10⁻³ / −1.5 × 10⁻³) AU
- Equilibrium temperature
- 686 (+10 / −10) K
- Mass provenance
- Mass
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00