NGC 3697 explained

NGC 3697
Epoch:	J2000
Constellation Name:	Leo
Ra:	^[1]
Z:	0.020884^[2]
H Radial V:	6261 km/s
Group Cluster:	HCG 53
Type:	SABb
Appmag V:	12.62
Appmag B:	14.1^[3]
Size V:	2.5 × 0.7^[4]
Names:	UGC 6479, MGC+04-27-042, PGC 35347

NGC 3697 is a spiral galaxy in the constellation of Leo.^[2] It was discovered on 24 February 1827 by John Herschel.^[5] It was described as "extremely faint, very small, extended 90°" by John Louis Emil Dreyer, the compiler of the New General Catalogue.^[5] It is a member of HCG 53, a compact group of galaxies.^[3]

One supernova, SN 2020aavb (type Ia, mag. 16), was discovered in NGC 3697 on 23 November, 2020.^[6]

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 3697. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. 9 November 2017.
3. NGC 3697. 9 November 2017.
4. POSS1 103a-O values used.
5. Web site: New General Catalog Objects: NGC 3650 - 3699. cseligman.com. 9 November 2017.
6. https://www.wis-tns.org/object/2020aavb Transient Name Server entry for SN 2020aavb.