HD 33142, une étoile K0 III, possède 3 planètes confirmées.
Mesuré
Distance
environ 396 années-lumière
Type spectral de l'étoile
K0 III
Planètes confirmées
3
Distance au Soleil
À propos 396 années-lumière. Pour la traverser :
Lumière396 ans
Vitesse de Voyager 17.03 millions d’années
Roule à 100 km/h4.27 milliards d'années
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 2011, par vitesse radiale (NASA Exoplanet Archive).
Ses planètes
HD 33142 b — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts 330 days; about 210 °C, hotter than boiling water; found in 2011 by radial velocity.
HD 33142 c — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 2 Earth years; about 81 °C, between freezing and boiling; found in 2016 by radial velocity.
HD 33142 d — 9.3 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 90 days; about 460 °C, hotter than boiling water; found in 2022 by radial velocity.
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.