Exoplanet
Kepler-138 b
218.08 light-years
- Discovery
- Transit · 2014
- Radius
- 0.64 (+0.02 / −0.02) Earth radii
- Mass
- 0.07 (+0.02 / −0.02) Earth masses
- Orbital period
- 10.3134 (+3 × 10⁻⁴ / −3 × 10⁻⁴) days
- Semi-major axis
- 0.0753 (+6 × 10⁻⁴ / −6 × 10⁻⁴) AU
- Equilibrium temperature
- 452 (+8 / −9) 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