Exoplanet
HD 12661 c
123.44 light-years
- Discovery
- Radial Velocity · 2002
- Radius
- 13.2 Earth radii
- Mass
- 899.4544 (+260.6193 / −212.945) Earth masses
- Orbital period
- 1,708 (+14 / −14) days
- Semi-major axis
- 2.8145 (+0.0238 / −0.0238) AU
- Equilibrium temperature
- 174.06 (+6.66 / −6.66) 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