Exoplanet
HD 40307 g
42.19 light-years
The archive flags this planet’s confirmation as questioned in the literature.
- Discovery
- Radial Velocity · 2013
- Radius
- 2.56 Earth radii
- Mass
- 7.1 (+2.6 / −2.6) Earth masses
- Orbital period
- 197.8 (+5.7 / −9) days
- Semi-major axis
- 0.6 (+0.034 / −0.033) AU
- Equilibrium temperature
- 255 (+349 / −349) 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