Exoplanet
Kepler-398 d
578.45 light-years
- Discovery
- Transit · 2016
- Radius
- 0.88 (+0.03 / −0.04) Earth radii
- Mass
- 0.615 Earth masses
- Orbital period
- 6.8344 (+1.518 × 10⁻⁵ / −1.518 × 10⁻⁵) days
- Semi-major axis
- 0.0618 AU
- Equilibrium temperature
- 636 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