Exoplanet
HD 28109 d
455.35 light-years
- Discovery
- Transit · 2022
- Radius
- 3.11 (+0.15 / −0.15) Earth radii
- Mass
- < 5.8 Earth masses
- Orbital period
- 84.2899 (+1.8 × 10⁻³ / −1.5 × 10⁻³) days
- Semi-major axis
- 0.411 (+0.016 / −0.016) AU
- Equilibrium temperature
- 561 (+11 / −11) 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