Exoplanet
HAT-P-66 b
3,051.05 light-years
- Discovery
- Transit · 2016
- Radius
- 17.8223 (+1.7934 / −1.1209) Earth radii
- Mass
- 248.8609 (+18.1163 / −18.1163) Earth masses
- Orbital period
- 2.9721 (+5.7 × 10⁻⁶ / −5.7 × 10⁻⁶) days
- Semi-major axis
- 0.0436 (+1.21 × 10⁻³ / −6.4 × 10⁻⁴) AU
- Equilibrium temperature
- 1,896 (+66 / −42) 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