Exoplanet
Kapteyn c
12.83 light-years
The archive flags this planet’s confirmation as questioned in the literature.
- Discovery
- Radial Velocity · 2014
- Radius
- 2.54 Earth radii
- Mass
- 7 (+1.2 / −1) Earth masses
- Orbital period
- 121.54 (+0.25 / −0.25) days
- Semi-major axis
- 0.311 (+0.038 / −0.014) AU
- Equilibrium temperature
- 165.59 (+10.2 / −10.2) 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