Exoplanet
HD 217786 b
180.97 light-years
- Discovery
- Radial Velocity · 2011
- Radius
- 12.3 Earth radii
- Mass
- 4,402.5591 (+402.6886 / −416.673) Earth masses
- Orbital period
- 1,301.3601 (+1.1749 / −0.4857) days
- Semi-major axis
- 2.446 (+0.109 / −0.119) AU
- Equilibrium temperature
- 207.3 (+7.24 / −7.24) 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