Etoile

Catalogue étoile

9681 systèmes stellaires

Base de données des étoiles proches de la Voie lactée. Cartographiés sont toutes les étoiles à moins d

Les systèmes stellaires les plus proches

Last added

1779 systèmes planétaires

Planetary bodies discovered orbiting nearby stars. In this database are mapped all exoplanets within 100 light years and much more.

Systèmes planétaires les plus proches

Exoplanètes nouvellement découvertes

Études scientifiques

	HD 163296		6. 3. 2025 (accepté) HD 163296 and its Giant Planets: Creation of Exo-comets, Interstellar Objects and Transport of Volatile Material
	L 97-3		6. 3. 2025 (accepté) MIRI-LRS spectrum of a cold exoplanet around a white dwarf: water, ammonia, and methane measurements
	DG Tauri		5. 3. 2025 (accepté) A Spectroastrometric Study of the Low-velocity Wind from DG Tau A
	HD 219666		5. 3. 2025 (accepté) HST Transmission Spectra of the Hot-Neptune HD 219666 b: Detection of Water and the Challenge of Constraining Both Water and Methane with HST
	HAT-P-70		5. 3. 2025 (accepté) A Time-Resolved High-Resolution Spectroscopic Analysis of Ionized Calcium and Dynamical Processes in the Ultra-Hot Jupiter HAT-P-70 b

Substellar types - brown dwarfs

Sous-naine brune
Classe spectrale: Y
typical mass: 0.015
typical radius: 0.04
Température: 350 K
count: 21 in 40 ly

Nain brun
Classe spectrale: T
typical mass: 0.03
typical radius: 0.06
Température: 700 K
count: 74 in 40 ly

Nain brun
Classe spectrale: L
typical mass: 0.04
typical radius: 0.08
Température: 1500 K
count: 55 in 40 ly

Stellar types - main sequence

Nain rouge
Classe spectrale: M
typical mass: 0.25
typical radius: 0.3
Température: 3100 K
count: 500 in 40 ly

Étoile orange
Classe spectrale: K
typical mass: 0.7
typical radius: 0.7
Température: 4500 K
count: 67 in 40 ly

Étoile jaune
Classe spectrale: G
typical mass: 0.9
typical radius: 1
Température: 5600 K
count: 24 in 40 ly

Étoile jaune-blanche
Classe spectrale: F
typical mass: 1.3
typical radius: 1.5
Température: 6500 K
count: 15 in 40 ly

Étoile blanche-bleue
Classe spectrale: A
typical mass: 1.9
typical radius: 1.8
Température: 8300 K
count: 5 in 40 ly

Étoile bleu-blanc
Classe spectrale: B
typical mass: 5
typical radius: 4
Température: 20000 K
count: 0 in 40 ly

Étoile bleue
Classe spectrale: O
typical mass: 45
typical radius: 10
Température: 40000 K
count: 0 in 40 ly

Stellar types - giants

Sous-géante
Classe spectrale: K|G|F|A|B
typical mass: 3
typical radius: 3
Température: 4000 K
count: 8 in 40 ly

Géant bleu
Classe spectrale: A|B|O
typical mass: 8
typical radius: 4
Température: 15000 K
count: 2 in 40 ly

Géant jaune
Classe spectrale: G|F|A
typical mass: 3
typical radius: 7
Température: 6000 K
count: 0 in 40 ly

Géant lumineux
Classe spectrale: M|G|F|A
typical mass: 10
typical radius: 20
Température: 15000 K
count: 0 in 40 ly

Géant rouge
Classe spectrale: K|M|S
typical mass: 1.2
typical radius: 50
Température: 5000 K
count: 2 in 40 ly