Exoplanet
55 Cnc B b
40.7 light-years
- Discovery
- Radial Velocity · 2025
- Radius
- 1.69 Earth radii
- Mass
- 3.5 (+0.8 / −0.8) Earth masses
- Orbital period
- 6.7994 (+1.3 × 10⁻³ / −1.4 × 10⁻³) days
- Semi-major axis
- 0.044 (+1.2 × 10⁻³ / −1.2 × 10⁻³) AU
- Equilibrium temperature
- 395.41 (+48.07 / −48.07) 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