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Public Universe

Exoplanet

GJ 3021 b

57.26 light-years

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Discovery
Radial Velocity · 2000
Radius
13.1 Earth radii
Mass
1,071.04 (+28.6 / −28.6) Earth masses
Orbital period
133.71 (+0.2 / −0.2) days
Semi-major axis
0.49 AU
Equilibrium temperature
350 (+90 / −90) 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