Exoplanet
K2-258 b
2,158.74 light-years
- Discovery
- Transit · 2018
- Radius
- 3 (+0.21 / −0.2) Earth radii
- Mass
- 9.27 Earth masses
- Orbital period
- 19.0921 (+5.76 × 10⁻³ / −6.33 × 10⁻³) days
- Semi-major axis
- 0.149 (+2.5 × 10⁻³ / −2.6 × 10⁻³) AU
- Equilibrium temperature
- 831 (+30 / −30) 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