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Public Universe

Exoplanet

HD 30177 c

181.3 light-years

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Discovery
Radial Velocity · 2016
Radius
12.9 Earth radii
Mass
1,484.2587 (+139.8445 / −136.6662) Earth masses
Orbital period
1.132 × 10⁴ (+490 / −940) days
Semi-major axis
9.9 (+0.29 / −0.62) AU
Equilibrium temperature
87.87 (+2.64 / −2.64) 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