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Public Universe

Exoplanet

HD 128356 b

85.31 light-years

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Discovery
Radial Velocity · 2016
Radius
13.9 Earth radii
Mass
282.8687 (+22.2481 / −22.2481) Earth masses
Orbital period
298.2 (+1.6 / −1.6) days
Semi-major axis
0.87 (+0.03 / −0.03) AU
Equilibrium temperature
232.36 (+6.8 / −6.8) 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