Exoplanet
Kepler-9 b
2,049.1 light-years
- Discovery
- Transit · 2010
- Radius
- 8.29 (+0.54 / −0.43) Earth radii
- Mass
- 43.4 (+1.6 / −2) Earth masses
- Orbital period
- 19.2389 (+6 × 10⁻⁵ / −6 × 10⁻⁵) days
- Semi-major axis
- 0.143 (+7 × 10⁻³ / −6 × 10⁻³) AU
- Equilibrium temperature
- 661 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