NGC 257

NGC 257
SDSS image of NGC 257
Observation data (J2000 epoch)
Constellation	Pisces
Right ascension	00^h 48^m 01.510^s[1]
Declination	+08° 17′ 49.45″[1]
Redshift	0.017592[2]
Heliocentric radial velocity	5274 km/s[2]
Distance	219.64 ± 34.73 Mly (67.343 ± 10.649 Mpc)[2]
Apparent magnitude (B)	13.7[3]
Characteristics
Type	Scd?[2]
Size	141,000 ly (43,100 pc)[2][note 1]
Apparent size (V)	3.0′ × 2.5′[2]
Other designations
UGC 493, MGC+01-03-003, PGC 2818

NGC 257 is a spiral galaxy in the Pisces constellation. It was discovered on December 29, 1790, by Frederick William Herschel.[4]

References

1. Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
2. "NED results for object NGC 0257". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 25 June 2017.
3. "NGC 257". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 June 2017.
4. Seligman, Courtney. "New General Catalogue objects: NGC 250 - 299". cseligman.com. Retrieved 25 June 2017.

Notes

1. POSS1 103a-O values used.

External links

• Media related to NGC 257 at Wikimedia Commons