Exoplanet
XO-1 b
533.44 light-years
- Discovery
- Transit · 2006
- Radius
- 12.7783 (+0.7846 / −0.7846) Earth radii
- Mass
- 263.7989 (+41.3179 / −41.3179) Earth masses
- Orbital period
- 3.9415 (+2.7 × 10⁻⁵ / −2.7 × 10⁻⁵) days
- Semi-major axis
- 0.0488 (+5 × 10⁻⁴ / −5 × 10⁻⁴) AU
- Equilibrium temperature
- 1,210 (+16 / −16) 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