Exoplanet
K2-166 b
1,555.38 light-years
- Discovery
- Transit · 2018
- Radius
- 2.19 (+0.2 / −0.19) Earth radii
- Mass
- 5.43 Earth masses
- Orbital period
- 8.527 (+3.62 × 10⁻³ / −3.7 × 10⁻³) days
- Semi-major axis
- 0.0858 (+1 × 10⁻³ / −9 × 10⁻⁴) AU
- Equilibrium temperature
- 1,140 (+17 / −18) 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