Exoplanet
K2-331 b
689.59 light-years
- Discovery
- Transit · 2021
- Radius
- 1.79 (+0.14 / −0.1) Earth radii
- Mass
- 3.86 Earth masses
- Orbital period
- 9.399 (+1.506 × 10⁻³ / −1.348 × 10⁻³) days
- Semi-major axis
- Unknown
- Equilibrium temperature
- 909 (+14 / −14) 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