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Public Universe

Exoplanet

HD 240237 b

3,044.27 light-years

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Discovery
Radial Velocity · 2011
Radius
12.2 Earth radii
Mass
5,050.3187 (+1,773.4914 / −1,773.4914) Earth masses
Orbital period
745.7 (+14 / −14) days
Semi-major axis
1.92 (+0.16 / −0.16) AU
Equilibrium temperature
1,153.09 (+149.2 / −149.2) 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