Exoplanet
K2-221 b
1,039.82 light-years
- Discovery
- Transit · 2018
- Radius
- 1.6789 (+0.1669 / −0.0957) Earth radii
- Mass
- 3.46 Earth masses
- Orbital period
- 2.3991 (+1.25 × 10⁻⁴ / −1.18 × 10⁻⁴) days
- Semi-major axis
- Unknown
- Equilibrium temperature
- Unknown
- 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