31 And
- 31 And
-
Delta Andromedae
Delta Andromedae
(δ And / δ Andromedae) |
Données d'observation
(Époque J2000.0) |
| Ascension droite |
00h 39m 19,7s |
| Déclinaison |
+30° 51′ 39″ |
| Constellation |
Andromède |
| Magnitude apparente |
+3,27 |
| Magnitude absolue |
? |
| Distance |
101 ± 2 al
(91 ± 1 pc) |
| Type spectral |
K3 III |
| Autres désignations |
| δ And (Bayer), 31 And (Flamsteed), HR 165, HD 3627, BD+30 91, SAO 54058, ADS 548 A, CCDM J00393 +3052A, FK5 20, HIP 3092 |
Delta Andromedae (δ And / δ Andromedae) est un système d'étoile triple dans la constellation d'Andromède. Elle se trouve à approximativement 101 années-lumière de la Terre.
Le composant primaire, δ Andromedae A est une géante orange de type K, avec une magnitude apparente de +3,27. Cette binaire spectroscopique a une période assez longue, celle-ci étant d'environ 15 000 jours, soit 41 ans. Son compagnon, δ Andromedae B, de treizième magnitude, est séparé du composant primaire de 28,7 secondes d'arc.
Voir aussi
Lien externe
Portail de l’astronomie
Catégories : Constellation d'Andromède | Étoile de type spectral KIII | Étoile multiple
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