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Public Universe

Exoplanet

TOI-209 b

369.82 light-years

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Discovery
Transit · 2026
Radius
2.3947 (+0.2223 / −0.1962) Earth radii
Mass
6.32 Earth masses
Orbital period
4.3794 (+1.7232 × 10⁻⁵ / −1.7282 × 10⁻⁵) days
Semi-major axis
Unknown
Equilibrium temperature
845.78 K
Mass provenance
M-R relationship

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