Exoplanet
HD 221287 b
182.4 light-years
- Discovery
- Radial Velocity · 2007
- Radius
- 13.1 Earth radii
- Mass
- 982.05 (+251.08 / −251.08) Earth masses
- Orbital period
- 456.1 (+7.7 / −5.8) days
- Semi-major axis
- 1.25 (+0.04 / −0.04) AU
- Equilibrium temperature
- 290.13 (+7.45 / −7.45) 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