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Public Universe

Exoplanet

K2-198 c

360.62 light-years

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Discovery
Transit · 2019
Radius
1.423 (+0.081 / −0.036) Earth radii
Mass
2.61 Earth masses
Orbital period
3.3596 (+4 × 10⁻⁶ / −2.1 × 10⁻⁶) days
Semi-major axis
Unknown
Equilibrium temperature
1,229.9 (+32.2 / −15.9) 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