Exoplanet
Kepler-66 b
3,923.53 light-years
- Discovery
- Transit · 2013
- Radius
- 2.8 (+0.16 / −0.16) Earth radii
- Mass
- 8.25 Earth masses
- Orbital period
- 17.8158 (+7.5 × 10⁻⁵ / −7.5 × 10⁻⁵) days
- Semi-major axis
- 0.1352 (+1.7 × 10⁻³ / −1.7 × 10⁻³) AU
- Equilibrium temperature
- 699 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