NGC 844

NGC 844
Image illustrative de l’article NGC 844
La galaxie spirale barrée NGC 844
Données d’observation
(Époque J2000.0)
Constellation Baleine
Ascension droite (α) 02h 10m 14,2s[1]
Déclinaison (δ) 06° 02′ 59″ [1]
Magnitude apparente (V) 14,1 [2]
15,1 dans la Bande B[2]
Brillance de surface 12,11 mag/am2[2]
Dimensions apparentes (V) 0,4′ × 0,4′ [2]
Décalage vers le rouge +0,015090 ± 0,000057[1]
Angle de position N/A[2]

Localisation dans la constellation : Baleine

(Voir situation dans la constellation : Baleine)
Astrométrie
Vitesse radiale 4 524 ± 17 km/s [1]
Distance 62,80 ± 4,41 Mpc (∼205 millions d'al)[1]
Caractéristiques physiques
Type d'objet Galaxie spirale barrée
Type de galaxie C[2] SB(rs)c? pec[3]
Dimensions environ 13,03 kpc (∼42 500 al)[1],[a]
Découverte
Découvreur(s) Albert Marth[3]
Date [3]
Désignation(s) PGC 8291
CGCG 413-52[2]
Liste des galaxies spirales barrées
modifier 

NGC 844 est une galaxie spirale barrée compacte située dans la constellation de la Baleine. Sa vitesse par rapport au fond diffus cosmologique est de 4 258 ± 25 km/s, ce qui correspond à une distance de Hubble de 62,8 ± 4,4 Mpc (∼205 millions d'al)[1]. NGC 844 a été découverte par l'astronome allemand Albert Marth en 1863.

Notes et références

Notes

  1. ↑ Diamètre dans la bande K_s (2MASS "total").

Références

  1. ↑ a b c d e f et g (en) « Results for object NGC 844 », NASA/IPAC Extragalactic Database (consulté le ).
  2. ↑ a b c d e f et g « Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 800 à 899 », sur astrovalleyfield.com (consulté le )
  3. ↑ a b et c (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 844 » (consulté le ).

Voir aussi

Articles connexes

Liens externes

    •  NGC 836  •  NGC 837  •  NGC 838  •  NGC 839  •  NGC 840  •  NGC 841  •  NGC 842  •  NGC 843  •  NGC 844  •  NGC 845  •  NGC 846  •  NGC 847  •  NGC 848  •  NGC 849  •  NGC 850  •  NGC 851  •  NGC 852      

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