Exoplanet
Kepler-638 b
3,232.91 light-years
- Discovery
- Transit · 2016
- Radius
- 1.83 (+0.56 / −0.31) Earth radii
- Mass
- 4.01 Earth masses
- Orbital period
- 6.0797 (+1.513 × 10⁻⁵ / −1.513 × 10⁻⁵) days
- Semi-major axis
- 0.067 (+4.4 × 10⁻⁴ / −4.4 × 10⁻⁴) AU
- Equilibrium temperature
- 1,111 K
- Mass provenance
- M-R relationship
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