Exoplanet
Kepler-401 d
3,149.24 light-years
- Discovery
- Transit · 2016
- Radius
- 2.27 (+0.4 / −0.26) Earth radii
- Mass
- 5.77 Earth masses
- Orbital period
- 184.2564 (+3.17 × 10⁻³ / −3.17 × 10⁻³) days
- Semi-major axis
- 0.6689 (+0.011 / −0.011) AU
- Equilibrium temperature
- 380 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