NGC 1281

NGC 1281
Galassia ellittica
NGC 1281 nelle immagini SDSS
Scoperta
ScopritoreJohn Dreyer
Data19 dicembre 1881 [1]
Dati osservativi
(epoca J2000)
CostellazionePerseo
Ascensione retta03h 20m 06.1s [2]
Declinazione41° 37′ 48″ [2][1]
Distanza195,3 milioni di a.l.
(59,89 Mpc) [2]
Magnitudine apparente (V)13,3 [3]

nella banda B: 14,5 [3]

Redshift+0,014076 ± 0,000007 [2][4]
Luminosità superficiale12,19
Angolo di posizione66° [3]
Velocità radiale4220 ± 2 [2] km/s
Caratteristiche fisiche
TipoGalassia ellittica
ClasseE5 [2][3], E4? [1]
Dimensioni68 000 a.l.
(20 900 [2] pc)
Altre designazioni
PGC 12458
MCG 7-7-67
CGCG 540-1089 [3]
Mappa di localizzazione
NGC 1281
Categoria di galassie ellittiche

NGC 1281 è una galassia ellittica situata nella costellazione di Perseo, a una distanza di circa 195 milioni di anni luce dalla nostra Via Lattea.[1]

Scoperta

La galassia è stata scoperta il 19 dicembre 1881 dall'astronomo irlandese di origine danese John Dreyer, l'autore del New General Catalogue.[1]

Descrizione

NGC 1281 fa parte dell'Ammasso di Perseo.[1]

Gruppo di NGC 1272

NGC 1281 fa parte del Gruppo di NGC 1272, un raggruppamento di galassie che comprende almeno 28 membri tra cui NGC 1272, IC 309, NGC 1293 e NGC 1334.[5] Nel suo articolo del 1993, Garcia include nella lista anche IC 1907, che è un duplicato di NGC 1278, e che egli identifica con PGC 12405. Si tratta di un errore in quanto NGC 1278 corrisponde a PGC 12438 ed è è posizionata alquanto più lontana rispetto alle altre galassie del gruppo. Invece PGC 12405 appartiene effettivamente a questo gruppo.

L'intero gruppo di NGC 1272 fa parte dell'Ammasso di Perseo (Abell 426).[1]

Note

  1. ^ a b c d e f g (EN) Courtney Seligman, Celestial Atlas Table of Contents, NGC 1281, su cseligman.com. URL consultato il 21 dicembre 2024.
  2. ^ a b c d e f g Results for object NGC 1281, su ned.ipac.caltech.edu, National Aeronautics and Space Administration / Infrared Processing and Analysis Center. URL consultato il 21 dicembre 2024.
  3. ^ a b c d e (FR) Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 1200 à 1299, su astrovalleyfield.com. URL consultato il 21 dicembre 2024.
  4. ^ (EN) NGC 1281 sur la base de données Simbad, su simbad.u-strasbg.fr. URL consultato il 21 dicembre 2024.
  5. ^ A.M. Garcia, General study of group membership. II - Determination of nearby groups, in Astronomy and Astrophysics Supplement Series, 100 #1, luglio 1993, pp. 47-90, Bibcode:1993A&AS..100...47G.

Voci correlate

Collegamenti esterni

New General Catalogue: NGC 1279  •  NGC 1280  •  NGC 1281  •  NGC 1282  •  NGC 1283
  Portale Astronomia

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