Exoplanet
HD 217107 c
65.43 light-years
- Discovery
- Radial Velocity · 2005
- Radius
- 12.9 Earth radii
- Mass
- 1,388.9101 (+41.3177 / −31.7828) Earth masses
- Orbital period
- 5,138.7 (+11 / −11) days
- Semi-major axis
- 5.922 (+0.035 / −0.044) AU
- Equilibrium temperature
- 123.27 (+1.03 / −1.03) 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