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Public Universe

Exoplanet

HD 181433 d

87.66 light-years

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Discovery
Radial Velocity · 2008
Radius
13.2 Earth radii
Mass
858.1367 (+540.3083 / −635.6568) Earth masses
Orbital period
6,896.1 (+102.7 / −123.7) days
Semi-major axis
6.74 (+0.18 / −0.18) AU
Equilibrium temperature
81.19 (+1.23 / −1.23) K
Mass provenance
Mass

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