NGC 550 explained

NGC 550 is a spiral galaxy in the constellation Cetus. It is estimated to be about 300 million light-years from the Milky Way^[3] and has a diameter of approximately 110,000 light years. The German-British astronomer William Herschel discovered it on 8 October 1785.^[4] ^[5] ^[6]

One supernova has been observed in NGC 550: SN 1961Q (type unknown, mag. 17.2).^[7]

Notes and References

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 .
NGC 550. 2020-05-15.
Web site: Results for object NGC 0550 (NGC 550). NASA/IPAC Extragalactic Database. California Institute of Technology. 2020-05-15.
Web site: Your NED Search Results. ned.ipac.caltech.edu. 2020-03-22.
Web site: Revised NGC Data for NGC 550. spider.seds.org. 2020-03-22.
Web site: The galaxy NGC 550 - In-The-Sky.org. Ford. Dominic. in-the-sky.org. en. 2020-03-22.
https://www.wis-tns.org/object/1961Q Transient Name Server entry for SN 1961Q.