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Public Universe

Exoplanet

HD 164509 b

173.23 light-years

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Discovery
Radial Velocity · 2012
Radius
14.3 Earth radii
Mass
140.7987 (+26.3799 / −26.3799) Earth masses
Orbital period
280.17 (+0.82 / −0.82) days
Semi-major axis
0.87 (+0.051 / −0.051) AU
Equilibrium temperature
319.12 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