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Exoplanet

Kepler-259 b

3,268.54 light-years

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Discovery
Transit · 2014
Radius
2.8 (+1.37 / −1.37) Earth radii
Mass
8.25 Earth masses
Orbital period
8.1153 (+2.2 × 10⁻⁵ / −2.2 × 10⁻⁵) days
Semi-major axis
0.079 AU
Equilibrium temperature
879 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