Exoplanet
XO-2 S b
493.79 light-years
- Discovery
- Radial Velocity · 2014
- Radius
- 10.9 Earth radii
- Mass
- 82.6354 (+3.1783 / −3.1783) Earth masses
- Orbital period
- 18.22 (+1 × 10⁻³ / −1 × 10⁻³) days
- Semi-major axis
- 0.1347 (+2.5 × 10⁻³ / −2.5 × 10⁻³) AU
- Equilibrium temperature
- 706.59 (+32.23 / −32.23) 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