Exoplanet
55 Cnc B c
40.7 light-years
- Discovery
- Radial Velocity · 2025
- Radius
- 2.16 Earth radii
- Mass
- 5.3 (+1.4 / −1.4) Earth masses
- Orbital period
- 33.747 (+0.035 / −0.035) days
- Semi-major axis
- 0.13 (+3 × 10⁻³ / −3 × 10⁻³) AU
- Equilibrium temperature
- 230.04 (+27.92 / −27.92) 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