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Public Universe

Exoplanet

HD 211403 b

271.01 light-years

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Discovery
Radial Velocity · 2021
Radius
12.8 Earth radii
Mass
1,760.7694 (+123.9531 / −120.7748) Earth masses
Orbital period
223.8 (+0.41 / −0.41) days
Semi-major axis
0.768 (+0.013 / −0.013) AU
Equilibrium temperature
380 (+13 / −13) 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