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Public Universe

Exoplanet

HD 154857 c

206.94 light-years

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Discovery
Radial Velocity · 2014
Radius
13.2 Earth radii
Mass
819.97 (+50.85 / −50.85) Earth masses
Orbital period
3,452 (+105 / −105) days
Semi-major axis
5.36 (+0.09 / −0.09) AU
Equilibrium temperature
154.88 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