Exoplanet
Kepler-18 b
1,412.41 light-years
- Discovery
- Transit · 2011
- Radius
- 2 (+0.1 / −0.1) Earth radii
- Mass
- 6.9 (+3.4 / −3.4) Earth masses
- Orbital period
- 3.5047 (+2.8 × 10⁻⁵ / −2.8 × 10⁻⁵) days
- Semi-major axis
- 0.0447 (+6 × 10⁻⁴ / −6 × 10⁻⁴) AU
- Equilibrium temperature
- 1,165 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