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Public Universe

Exoplanet

YZ Cet c

12.11 light-years

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Discovery
Radial Velocity · 2017
Radius
1.05 Earth radii
Mass
1.14 (+0.11 / −0.1) Earth masses
Orbital period
3.0599 (+1 × 10⁻⁴ / −1 × 10⁻⁴) days
Semi-major axis
0.0216 (+4.6 × 10⁻⁴ / −5.4 × 10⁻⁴) AU
Equilibrium temperature
410.3 (+2 / −1.9) K
Mass provenance
Msini

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