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Exoplanet

Kepler-129 d

1,333.47 light-years

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Discovery
Radial Velocity · 2021
Radius
12.6 Earth radii
Mass
2,637.9758 (+349.6112 / −222.4799) Earth masses
Orbital period
2,646 (+140 / −94) days
Semi-major axis
4 (+0.1 / −0.1) AU
Equilibrium temperature
178.86 (+3.46 / −3.46) 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