Exoplanet
HD 28109 c
455.35 light-years
- Discovery
- Transit · 2022
- Radius
- 4.13 (+0.16 / −0.14) Earth radii
- Mass
- 9.2 (+2 / −2) Earth masses
- Orbital period
- 55.9971 (+3.4 × 10⁻⁴ / −3.7 × 10⁻⁴) days
- Semi-major axis
- 0.308 (+0.011 / −0.011) AU
- Equilibrium temperature
- 643 (+12 / −12) 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