Exoplanet
Kepler-1666 b
4,498.9 light-years
- Discovery
- Transit · 2020
- Radius
- 2.8827 Earth radii
- Mass
- 8.66 Earth masses
- Orbital period
- 25.8476 days
- Semi-major axis
- 0.1761 AU
- Equilibrium temperature
- 672 K
- Mass provenance
- M-R relationship
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