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Public Universe

Exoplanet

ups And c

43.72 light-years

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Discovery
Radial Velocity · 1999
Radius
12.3 Earth radii
Mass
4,443.2411 (+731.0053 / −1,684.4906) Earth masses
Orbital period
241.258 (+0.064 / −0.064) days
Semi-major axis
0.8278 (+1.5 × 10⁻⁵ / −1.5 × 10⁻⁵) AU
Equilibrium temperature
407.56 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