Exoplanet
K2-139 b
501.81 light-years
- Discovery
- Transit · 2017
- Radius
- 9.11 (+0.17 / −0.17) Earth radii
- Mass
- 123.0002 (+26.3799 / −23.8373) Earth masses
- Orbital period
- 28.3806 (+5.51 × 10⁻⁴ / −5.28 × 10⁻⁴) days
- Semi-major axis
- 0.1796 (+1.5 × 10⁻³ / −1.5 × 10⁻³) AU
- Equilibrium temperature
- 524 (+8 / −8) K
- Mass provenance
- Mass
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