Exoplanet
GJ 338 B b
20.65 light-years
- Discovery
- Radial Velocity · 2020
- Radius
- 3.25 Earth radii
- Mass
- 10.6 (+1.2 / −1.2) Earth masses
- Orbital period
- 24.422 (+0.014 / −0.014) days
- Semi-major axis
- 0.142 (+5 × 10⁻³ / −5 × 10⁻³) AU
- Equilibrium temperature
- 391 (+20 / −20) K
- Mass provenance
- Msini
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