Traduit par IA (Opus 5.5) à partir de la fiche anglaise. Les nombres, noms et sources sont inchangés.

Étoile avec 7 planètes connues

TRAPPIST-1

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TRAPPIST-1, une étoile M8.0 V, possède 7 planètes confirmées.

Mesuré

Distance: environ 40.5 années-lumière
Type spectral de l'étoile: M8.0 V
Planètes confirmées: 7

Distance au Soleil

À propos 40.5 années-lumière. Pour la traverser :

Lumière40.5 ans
Vitesse de Voyager 1720,000 ans
Roule à 100 km/h437 millions 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.

Faits

TRAPPIST-1 d et TRAPPIST-1 e ont une température d'équilibre comprise entre −50 et +50 °C.

Méthode de découverte

Première planète découverte en 2016, par transit (NASA Exoplanet Archive).

Ses planètes

TRAPPIST-1 b — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 36 hours; about 130 °C, hotter than boiling water; found in 2016 by transit.
TRAPPIST-1 c — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 2 days; about 67 °C, between freezing and boiling; found in 2016 by transit.
TRAPPIST-1 d — 0.8 times Earth's width, smaller than the Earth; its year lasts 4 days; about 13 °C, between freezing and boiling; found in 2016 by transit.
TRAPPIST-1 e — 0.9 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about −23 °C, below freezing; found in 2017 by transit.
TRAPPIST-1 f — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 9 days; about −55 °C, below freezing; found in 2017 by transit.
TRAPPIST-1 g — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 12 days; about −76 °C, below freezing; found in 2017 by transit.
TRAPPIST-1 h — 0.8 times Earth's width, smaller than the Earth; its year lasts 19 days; about −100 °C, below freezing; found in 2017 by transit.

The NASA Exoplanet Archive's page

Source

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.

Chaque catalogue utilisé par Ouranos est cité dans la page des crédits.

Distance au Soleil

À propos 40.5 années-lumière. Pour la traverser :

Lumière40.5 ans

Vitesse de Voyager 1720,000 ans

Roule à 100 km/h437 millions 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.

Ses planètes

TRAPPIST-1 b — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 36 hours; about 130 °C, hotter than boiling water; found in 2016 by transit.

TRAPPIST-1 c — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 2 days; about 67 °C, between freezing and boiling; found in 2016 by transit.

TRAPPIST-1 d — 0.8 times Earth's width, smaller than the Earth; its year lasts 4 days; about 13 °C, between freezing and boiling; found in 2016 by transit.

TRAPPIST-1 e — 0.9 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about −23 °C, below freezing; found in 2017 by transit.

TRAPPIST-1 f — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 9 days; about −55 °C, below freezing; found in 2017 by transit.

TRAPPIST-1 g — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 12 days; about −76 °C, below freezing; found in 2017 by transit.

TRAPPIST-1 h — 0.8 times Earth's width, smaller than the Earth; its year lasts 19 days; about −100 °C, below freezing; found in 2017 by transit.

Source

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.