Exoplanet
K2-18 c
124.03 light-years
The archive flags this planet’s confirmation as questioned in the literature.
- Discovery
- Radial Velocity · 2017
- Radius
- 2.65 Earth radii
- Mass
- 7.51 (+1.33 / −1.33) Earth masses
- Orbital period
- 8.962 (+8 × 10⁻³ / −8 × 10⁻³) days
- Semi-major axis
- 0.06 (+3 × 10⁻³ / −3 × 10⁻³) AU
- Equilibrium temperature
- 363 (+14 / −14) K
- Mass provenance
- Msini
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