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Public Universe

Exoplanet

HD 39194 b

86.15 light-years

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Discovery
Radial Velocity · 2021
Radius
1.99 Earth radii
Mass
4.62 (+0.32 / −0.32) Earth masses
Orbital period
5.6369 (+3.2 × 10⁻⁴ / −3.2 × 10⁻⁴) days
Semi-major axis
0.059 (+9.2 × 10⁻⁴ / −9.2 × 10⁻⁴) AU
Equilibrium temperature
915.16 (+30.87 / −30.87) 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