NGC 4866 explained

NGC 4866
Epoch:	J2000
Constellation Name:	Virgo
Ra:	^[1]
H Radial V:	1977 km/s
Z:	0.006615
Dist Ly:	^[2]
Group Cluster:	Virgo Cluster
Type:	SA0^+(r):^[3]
Appmag V:	11.08^[4]
Appmag B:	12.00
Size V:	5.8 × 0.95
Names:	^[5]

NGC 4866 is an unbarred lenticular galaxy^[3] located roughly 100 million light-years^[2] away in the constellation Virgo. It was first observed by British astronomer Sir William Herschel on January 14, 1787.^[6] It is a member of the Virgo Cluster.^[7]

On April 1, 2015, a bright source was discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN) program, and was designated ASASSN-15ga. The source is likely a type Ia supernova.^[8]

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. Cosmicflows-2: The Data. Tully, R. Brent. etal. The Astronomical Journal. 146. 4. 2013. 86 . 2013AJ....146...86T. 10.1088/0004-6256/146/4/86. 1307.7213. 118494842 .
3. Web site: Results for object NGC 4866 (NGC 4866). NASA/IPAC Extragalactic Database. California Institute of Technology. 2021-02-02.
4. Web site: Search specification: NGC 4866. HyperLeda. Université Claude Bernard Lyon 1. 2021-02-02.
5. NGC 4866. 2021-02-02.
6. Web site: New General Catalogue objects: NGC 4850 - 4899. Seligman, Courtney. cseligman.com. 2021-02-02.
7. 10.1088/0067-0049/215/2/22. 2014ApJS..215...22K. The Extended Virgo Cluster Catalog. 2014. Kim. Suk. Rey. Soo-Chang. Jerjen. Helmut. Lisker. Thorsten. Sung. Eon-Chang. Lee. Youngdae. Chung. Jiwon. Pak. Mina. Yi. Wonhyeong. Lee. Woong. The Astrophysical Journal Supplement Series. 215. 2. 22. 1409.3283 . 1885/76226. 119296675. free.
8. News: Piascik, A. S.. Steele, I. A.. 2015-01-01. ATel #7333: Spectral Classification of ASASSN-15ga in NGC4866. The Astronomer's Telegram. 2021-02-02.