NGC 2208

NGC 2208
Image illustrative de l’article NGC 2208
La galaxie lenticulaire NGC 2208.
Données d’observation
(Époque J2000.0)
Constellation Cocher
Ascension droite (α) 06h 22m 34,7s[1]
Déclinaison (δ) 51° 54′ 34″ [1]
Magnitude apparente (V) 13,3 [2]
14,3 dans la Bande B[2]
Brillance de surface 13,8 mag/am2[2]
Dimensions apparentes (V) 1,6′ × 1,1′[2]
Décalage vers le rouge 0,019400 ± 0,000163[1]
Angle de position 110°[2]

Localisation dans la constellation : Cocher

(Voir situation dans la constellation : Cocher)
Astrométrie
Vitesse radiale 5 816 ± 49 km/s [1]
Distance 86,27 ± 6,08 Mpc (∼281 millions d'al) [3]
Caractéristiques physiques
Type d'objet Galaxie lenticulaire
Type de galaxie S0?[1] S0[2],[4]
Dimensions environ 47,02 kpc (∼153 000 al)[1],[a]
Découverte
Découvreur(s) Lewis Swift[4]
Date [4]
Désignation(s) PGC 18911
UGC 3542
MCG 9-11-10
ZWG 260.7
NPM1G +51.0053[2]
Liste des galaxies lenticulaires
modifier 

NGC 2208 est une vaste galaxie lenticulaire située dans la constellation du Cocher. Sa vitesse par rapport au fond diffus cosmologique est de 5 849 ± 49 km/s, ce qui correspond à une distance de Hubble de 86,3 ± 6,1 Mpc (∼281 millions d'al)[1]. NGC 2208 a été découverte par l'astronome américain Lewis Swift en 1886[4].

Notes et références

Notes

  1. ↑ Diamètre dans la bande RC3 D_0 (blue).

Références

  1. ↑ a b c d e f et g (en) « Results for object NGC 2208 », NASA/IPAC Extragalactic Database (consulté le ).
  2. ↑ a b c d e f et g (en) « Revised NGC and IC Catalog by Wolfgang Steinicke » (consulté le )
  3. ↑ On obtient la distance qui nous sépare d'une galaxie à l'aide de la loi de Hubble-Lemaître : v = Hod, où Ho est la constante de Hubble (70 ± 5 (km/s)/Mpc). L'incertitude relative Δd/d sur la distance est égale à la somme des incertitudes relatives de la vitesse et de Ho.
  4. ↑ a b c et d (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 2208 » (consulté le ).

Voir aussi

Articles connexes

Liens externes

    •  NGC 2200  •  NGC 2201  •  NGC 2202  •  NGC 2203  •  NGC 2204  •  NGC 2205  •  NGC 2206  •  NGC 2207  •  NGC 2208  •  NGC 2209  •  NGC 2210  •  NGC 2211  •  NGC 2212  •  NGC 2213  •  NGC 2214  •  NGC 2215  •  NGC 2216      

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