Exoplanet
K2-17 b
408.04 light-years
- Discovery
- Transit · 2015
- Radius
- 2.23 (+0.2 / −0.2) Earth radii
- Mass
- 5.6 Earth masses
- Orbital period
- 17.9675 (+1.52 × 10⁻³ / −1.52 × 10⁻³) days
- Semi-major axis
- 0.119 (+2 × 10⁻³ / −2 × 10⁻³) AU
- Equilibrium temperature
- 487 (+10 / −10) 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