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Public Universe

Exoplanet

HD 20794 b

19.58 light-years

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Discovery
Radial Velocity · 2011
Radius
1.45 Earth radii
Mass
2.7 (+0.3 / −0.3) Earth masses
Orbital period
18.314 (+2.2 × 10⁻³ / −2.2 × 10⁻³) days
Semi-major axis
0.1257 (+5.2 × 10⁻⁴ / −5.3 × 10⁻⁴) AU
Equilibrium temperature
660 K
Mass provenance
Msin(i)/sin(i)

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