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Public Universe

Exoplanet

HD 80606 b

216.8 light-years

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Discovery
Radial Velocity · 2001
Radius
11.5677 (+0.1681 / −0.1681) Earth radii
Mass
1,323.4693 (+1.4938 / −1.4938) Earth masses
Orbital period
111.4368 (+7.4 × 10⁻⁵ / −7.4 × 10⁻⁵) days
Semi-major axis
0.4603 (+2.1 × 10⁻³ / −2.1 × 10⁻³) AU
Equilibrium temperature
405 (+7 / −7) 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