Exoplanet
HD 217958 b
201.55 light-years
- Discovery
- Radial Velocity · 2022
- Radius
- 14.2 Earth radii
- Mass
- 166.5421 (+110.2865 / −20.0232) Earth masses
- Orbital period
- 2,560.1977 (+66.5229 / −91.152) days
- Semi-major axis
- 3.758 (+0.169 / −0.2) AU
- Equilibrium temperature
- 169.89 (+7.16 / −7.16) 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