Exoplanet
Kepler-221 d
1,256.46 light-years
- Discovery
- Transit · 2014
- Radius
- 2.73 (+0.25 / −0.25) Earth radii
- Mass
- 3.61 (+0.91 / −0.81) Earth masses
- Orbital period
- 10.0416 (+1.1 × 10⁻⁵ / −1.1 × 10⁻⁵) days
- Semi-major axis
- 0.087 AU
- Equilibrium temperature
- 712 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