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Public Universe

Exoplanet

HD 134987 b

85.39 light-years

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Discovery
Radial Velocity · 1999
Radius
13.5 Earth radii
Mass
511.7063 (+22.2481 / −22.2481) Earth masses
Orbital period
258.18 (+0.07 / −0.07) days
Semi-major axis
0.81 (+0.02 / −0.02) AU
Equilibrium temperature
339.45 (+6 / −6) 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