Exoplanet
K2-291 b
293.72 light-years
- Discovery
- Transit · 2019
- Radius
- 1.589 (+0.095 / −0.072) Earth radii
- Mass
- 6.49 (+1.16 / −1.16) Earth masses
- Orbital period
- 2.2252 (+6.6 × 10⁻⁵ / −6.8 × 10⁻⁵) days
- Semi-major axis
- 0.0326 (+4.4 × 10⁻⁴ / −4.4 × 10⁻⁴) AU
- Equilibrium temperature
- 1,278 (+30 / −30) 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