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Public Universe

Exoplanet

K2-388 b

947.47 light-years

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Discovery
Transit · 2022
Radius
3.9 (+0.2 / −0.1) Earth radii
Mass
14.5 Earth masses
Orbital period
6.3393 (+1.3 × 10⁻⁴ / −1.3 × 10⁻⁴) days
Semi-major axis
Unknown
Equilibrium temperature
874 (+26 / −25) 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