Exoplanet
HD 99109 b
178.7 light-years
- Discovery
- Radial Velocity · 2005
- Radius
- 14.3 Earth radii
- Mass
- 139.8452 (+25.4264 / −25.4264) Earth masses
- Orbital period
- 439.3 (+5.6 / −5.6) days
- Semi-major axis
- 1.11 (+0.02 / −0.02) AU
- Equilibrium temperature
- 239.32 (+3.57 / −3.57) 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