Exoplanet
HD 40956 b
380.28 light-years
- Discovery
- Radial Velocity · 2017
- Radius
- 13.2 Earth radii
- Mass
- 858.141 (+190.698 / −190.698) Earth masses
- Orbital period
- 578.6 (+3.3 / −3.3) days
- Semi-major axis
- 1.4 (+0.1 / −0.1) AU
- Equilibrium temperature
- 580.56 (+23.8 / −23.8) 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