Exoplanet
HAT-P-31 b
1,122.14 light-years
- Discovery
- Transit · 2011
- Radius
- 12.2178 (+1.6814 / −1.6814) Earth radii
- Mass
- 721.4741 (+266.9772 / −266.9772) Earth masses
- Orbital period
- 5.0054 (+9.1 × 10⁻⁵ / −9.1 × 10⁻⁵) days
- Semi-major axis
- 0.061 (+1.3 × 10⁻³ / −1.1 × 10⁻³) AU
- Equilibrium temperature
- 1,450 (+230 / −110) 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