Exoplanet
HD 66428 b
173.78 light-years
- Discovery
- Radial Velocity · 2005
- Radius
- 12.4 Earth radii
- Mass
- 3,478.9497 (+776.137 / −1,222.0502) Earth masses
- Orbital period
- 2,269.8173 (+5.3661 / −5.854) days
- Semi-major axis
- 3.395 (+0.141 / −0.157) AU
- Equilibrium temperature
- 159.02 (+3.8 / −3.8) 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