Exoplanet
HD 40307 c
42.19 light-years
- Discovery
- Radial Velocity · 2009
- Radius
- Unknown
- Mass
- < 1,868.5132 Earth masses
- Orbital period
- 9.6184 (+5 × 10⁻³ / −4.9 × 10⁻³) days
- Semi-major axis
- 0.0799 (+4 × 10⁻³ / −4 × 10⁻³) AU
- Equilibrium temperature
- 696 (+792 / −792) 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