Voyager 1 à la vitesse à laquelle elle s'est éloignée au cours de l'année jusqu'à 2026-10-25 (JPL Horizons). En voiture : sans arrêt, sans jamais refaire le plein.
Méthode de découverte
Première planète découverte en 2013, par transit (NASA Exoplanet Archive).
Ses planètes
Kepler-396 c — 5.3 times Earth's width, Neptune-sized; its year lasts 89 days; about 120 °C, hotter than boiling water; found in 2013 by transit.
Kepler-396 b — 3.5 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 43 days; about 220 °C, hotter than boiling water; found in 2013 by transit.
NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.