NGC 257 explained

NGC 257
Epoch:	J2000
Constellation Name:	Pisces
Ra:	^[1]
Z:	0.017592^[2]
H Radial V:	5274 km/s
Type:	Scd?
Size:	^[3]
Appmag B:	13.7^[4]
Size V:	3.0 × 2.5
Names:	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.^[5]

Notes and References

1. 10.1086/498708 . 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. . The Two Micron All Sky Survey (2MASS) . The Astronomical Journal . 1 February 2006 . 131 . 2 . 1163–1183 . 2006AJ....131.1163S . 18913331 . 0004-6256 . free .
2. Web site: NED results for object NGC 0257. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. 25 June 2017.
3. POSS1 103a-O values used.
4. NGC 257. 25 June 2017.
5. Web site: New General Catalogue objects: NGC 250 - 299. Seligman, Courtney. cseligman.com. 25 June 2017.