Exoplanet
HR 8799 e
134.52 light-years
- Discovery
- Imaging · 2010
- Radius
- 13.1145 (+1.4572 / −1.233) Earth radii
- Mass
- 3,178.3 (+2,224.81 / −1,271.32) Earth masses
- Orbital period
- 2.0816 × 10⁴ (+1,128.62 / −1,128.62) days
- Semi-major axis
- 16.4 (+2.1 / −1.1) AU
- Equilibrium temperature
- 1,150 (+50 / −50) 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