Exoplanet
HD 177830 b
204.72 light-years
- Discovery
- Radial Velocity · 1999
- Radius
- 13.5 Earth radii
- Mass
- 537.1327 (+63.566 / −63.566) Earth masses
- Orbital period
- 410.1 (+2.2 / −2.2) days
- Semi-major axis
- 1.14 (+0.03 / −0.03) AU
- Equilibrium temperature
- 399.64 (+9.53 / −9.53) K
- Mass provenance
- Msini
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