Exoplanet
GJ 581 e
20.54 light-years
- Discovery
- Radial Velocity · 2009
- Radius
- 1.38 Earth radii
- Mass
- 2.48 (+0.7 / −0.42) Earth masses
- Orbital period
- 3.1481 (+4 × 10⁻⁴ / −4 × 10⁻⁴) days
- Semi-major axis
- 0.028 (+3 × 10⁻⁴ / −3 × 10⁻⁴) AU
- Equilibrium temperature
- 554.37 (+6.84 / −6.84) 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