Exoplanet
HAT-P-4 b
1,045.17 light-years
- Discovery
- Transit · 2007
- Radius
- 14.28 (+0.549 / −0.673) Earth radii
- Mass
- 213.255 (+10.488 / −13.984) Earth masses
- Orbital period
- 3.0565 days
- Semi-major axis
- 0.0444 (+8.1 × 10⁻⁴ / −1.5 × 10⁻³) AU
- Equilibrium temperature
- 1,686 (+30 / −26) 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