Exoplanet
Kepler-9 d
2,049.1 light-years
- Discovery
- Transit · 2010
- Radius
- 1.64 (+0.19 / −0.14) Earth radii
- Mass
- 8.4147 (+4.1894 / −4.1894) Earth masses
- Orbital period
- 1.5929 (+4.5 × 10⁻⁵ / −4.5 × 10⁻⁵) days
- Semi-major axis
- 0.0273 (+4.2 × 10⁻⁴ / −4.3 × 10⁻⁴) AU
- Equilibrium temperature
- 2,026 (+60 / −60) 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