Exoplanet
HD 4203 b
265.42 light-years
- Discovery
- Radial Velocity · 2001
- Radius
- 13.3 Earth radii
- Mass
- 708.7609 (+66.7443 / −66.7443) Earth masses
- Orbital period
- 431.88 (+0.85 / −0.85) days
- Semi-major axis
- 1.17 (+0.02 / −0.02) AU
- Equilibrium temperature
- 297.28 (+5.91 / −5.91) 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