Exoplanet
ROXs 12 b
445.69 light-years
- Discovery
- Imaging · 2013
- Radius
- 12.2 Earth radii
- Mass
- 5,085 (+1,271 / −1,271) Earth masses
- Orbital period
- Unknown
- Semi-major axis
- 210 (+20 / −20) AU
- Equilibrium temperature
- 13.23 (+1.14 / −1.14) 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