NGC 251
NGC 251 is a spiral galaxy in the constellation of Pisces. It was discovered on October 15, 1784, by Frederick William Herschel.
NGC 251 | |
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SDSS image of 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] |
Notes
- POSS1 103a-O values used.
References
- 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.
- "NED results for object NGC 0251". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 5 May 2017.
- "NGC 251". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 May 2017.
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