Exoplanet
Kepler-821 b
2,004.46 light-years
- Discovery
- Transit · 2016
- Radius
- 1.31 (+0.1 / −0.08) Earth radii
- Mass
- 2.27 Earth masses
- Orbital period
- 1.9228 (+4.817 × 10⁻⁶ / −4.817 × 10⁻⁶) days
- Semi-major axis
- 0.029 AU
- Equilibrium temperature
- 1,215 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