Exoplanet
K2-278 b
2,565.02 light-years
- Discovery
- Transit · 2018
- Radius
- 2.98 (+0.23 / −0.23) Earth radii
- Mass
- 9.17 Earth masses
- Orbital period
- 3.335 (+7.01 × 10⁻⁴ / −8.59 × 10⁻⁴) days
- Semi-major axis
- 0.0488 (+9 × 10⁻⁴ / −9 × 10⁻⁴) AU
- Equilibrium temperature
- 1,711 (+101 / −101) 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