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Public Universe

Exoplanet

gam1 Leo b

130.1 light-years

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Discovery
Radial Velocity · 2009
Radius
12.5 Earth radii
Mass
2,790.43 (+317.817 / −317.817) Earth masses
Orbital period
428.5 (+1.25 / −1.25) days
Semi-major axis
1.19 (+0.02 / −0.02) AU
Equilibrium temperature
1,080.7 (+29 / −29) 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