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Public Universe

Exoplanet

HD 103949 b

86.43 light-years

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Discovery
Radial Velocity · 2019
Radius
3.35 Earth radii
Mass
11.2 (+2.3 / −2.3) Earth masses
Orbital period
120.878 (+0.446 / −0.446) days
Semi-major axis
0.439 (+9 × 10⁻³ / −9 × 10⁻³) AU
Equilibrium temperature
302.65 (+6.2 / −6.2) 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