SN 1941B (type unknown, mag. 15.1) was discovered by Josef J. Johnson on 25 March 1941.[6][7][8] [Note: some sources incorrectly list the discovery date as 28 March 1941.]
SN 2019np (Type Ia, mag. 13.0) was discovered byKōichi Itagaki on 9 January 2019.[9] This supernova was the brightest observed in the year 2019.[10]
^abSkrutskie, 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.ISSN0004-6256.S2CID18913331.
^Johnson, Josef J. (13 May 1941). Strömgren, Elis (ed.)."SUPERNOVA IN NGC 3254".Central Bureau for Astronomical Telegrams.862.IAU: 1. Retrieved27 November 2024.
![NGC 3254 imaged by the Hubble Space Telescope[11]](/mt/?noimg=&dark=on&url=http%3a%2f%2fen.m.wikipedia.org%2fwiki%2fFile%3aNGC3254_-_HST_-_Potw2124a.jpg)
Media related toNGC 3254 at Wikimedia Commons
