Exoplanet
HD 2039 b
279.49 light-years
- Discovery
- Radial Velocity · 2002
- Radius
- 12.7 Earth radii
- Mass
- 1,999.1507 (+368.6828 / −368.6828) Earth masses
- Orbital period
- 1,120 (+23 / −23) days
- Semi-major axis
- 2.2 (+0.06 / −0.06) AU
- Equilibrium temperature
- 210.84 (+4.12 / −4.12) 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