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Exoplanet

HAT-P-17 c

301.31 light-years

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Discovery
Radial Velocity · 2012
Radius
13.1 Earth radii
Mass
1,080.6 (+349.6 / −222.5) Earth masses
Orbital period
5,584 (+7,700 / −2,100) days
Semi-major axis
5.6 (+3.5 / −1.4) AU
Equilibrium temperature
99.59 (+22 / −22) 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