Exoplanet
HR 858 c
104.25 light-years
- Discovery
- Transit · 2019
- Radius
- 1.979 (+0.054 / −0.051) Earth radii
- Mass
- < 3.8 Earth masses
- Orbital period
- 5.9739 (+1.5 × 10⁻⁵ / −1.6 × 10⁻⁵) days
- Semi-major axis
- 0.0687 (+9.2 × 10⁻⁴ / −9.2 × 10⁻⁴) AU
- Equilibrium temperature
- 1,309 (+19 / −19) 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