Exoplanet
Kepler-138 d
218.08 light-years
- Discovery
- Transit · 2014
- Radius
- 1.51 (+0.04 / −0.04) Earth radii
- Mass
- 2.1 (+0.6 / −0.7) Earth masses
- Orbital period
- 23.0923 (+6 × 10⁻⁴ / −6 × 10⁻⁴) days
- Semi-major axis
- 0.1288 (+1 × 10⁻³ / −1 × 10⁻³) AU
- Equilibrium temperature
- 345 (+7 / −7) 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