Exoplanet
HD 11977 b
221.57 light-years
- Discovery
- Radial Velocity · 2005
- Radius
- 12.7 Earth radii
- Mass
- 2,080 Earth masses
- Orbital period
- 711 (+8 / −8) days
- Semi-major axis
- 1.93 AU
- Equilibrium temperature
- 547.97 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