Exoplanet
HAT-P-8 b
689.99 light-years
- Discovery
- Transit · 2008
- Radius
- 15.6926 (+1.4572 / −1.4572) Earth radii
- Mass
- 406.8224 (+85.8141 / −85.8141) Earth masses
- Orbital period
- 3.0763 (+4 × 10⁻⁶ / −4 × 10⁻⁶) days
- Semi-major axis
- 0.045 (+4.6 × 10⁻⁴ / −4.5 × 10⁻⁴) AU
- Equilibrium temperature
- 1,713 (+27 / −27) 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