Exoplanet
XO-3 b
694.89 light-years
- Discovery
- Transit · 2007
- Radius
- 14.7959 (+0.2802 / −0.2802) Earth radii
- Mass
- 4,217.583 (+111.2399 / −114.4182) Earth masses
- Orbital period
- 3.1915 (+1.4 × 10⁻⁷ / −1.4 × 10⁻⁷) days
- Semi-major axis
- 0.0482 (+6.1 × 10⁻⁴ / −6.5 × 10⁻⁴) AU
- Equilibrium temperature
- 1,890 (+32 / −29) 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