Exoplanet
Kepler-28 c
1,429.74 light-years
- Discovery
- Transit · 2011
- Radius
- 1.857 (+0.042 / −0.042) Earth radii
- Mass
- 2.06 (+0.7 / −0.52) Earth masses
- Orbital period
- 8.99 days
- Semi-major axis
- 0.0752 (+4.8 × 10⁻⁴ / −4.8 × 10⁻⁴) AU
- Equilibrium temperature
- 509 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