NGC 251

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NGC 251
Observation data (J2000 epoch)
Constellation Pisces
Right ascension 00h 47m 54.031s[1]
Declination +19° 35′ 48.51″[1]
Redshift 0.015184[2]
Helio radial velocity 4552 km/s[2]
Distance 204.36 ± 12.64 Mly (62.657 ± 3.876 Mpc)[2]
Apparent magnitude (B) 14.6[3]
Characteristics
Type Sc[2]
Size 148,600 ly (45,570 pc)[2][note 1]
Apparent size (V) 2.4′ × 1.9′[2]
Other designations
UGC 490, MGC+03-03-003, PGC 2806[3]
See also: Galaxy, List of galaxies

NGC 251 is a spiral galaxy in the constellation of Pisces. It was discovered on October 15, 1784, by Frederick William Herschel.

Notes[edit]

  1. ^ POSS1 103a-O values used.

References[edit]

  1. ^ a b Skrutskie, M. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. 
  2. ^ a b c d e f "NED results for object NGC 0251". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 5 May 2017. 
  3. ^ a b "NGC 251". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 May 2017.