Exoplanet
55 Cnc e
41.05 light-years
- Discovery
- Radial Velocity · 2004
- Radius
- 1.875 (+0.029 / −0.029) Earth radii
- Mass
- 7.99 (+0.32 / −0.33) Earth masses
- Orbital period
- 0.7365 (+1.3 × 10⁻⁶ / −1.4 × 10⁻⁶) days
- Semi-major axis
- 0.0154 (+5 × 10⁻⁵ / −5 × 10⁻⁵) AU
- Equilibrium temperature
- 1,958 (+15 / −15) 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