NGC 3697

NGC 3697 is a spiral galaxy in the constellation of Leo.^[2] It was discovered on 24 February 1827 by John Herschel.^[4] It was described as "extremely faint, very small, extended 90°" by John Louis Emil Dreyer, the compiler of the New General Catalogue.^[4] It is a member of HCG 53, a compact group of galaxies.^[3]

NGC 3697
NGC 3697 by SDSS
Observation data (J2000 epoch)
Constellation	Leo
Right ascension	11h 28m 50.380s[1]
Declination	+20° 47′ 42.61″[1]
Redshift	0.020884[2]
Heliocentric radial velocity	6261 km/s[2]
Distance	291.57 ± 24.07 Mly (89.395 ± 7.379 Mpc)[2]
Group or cluster	HCG 53[3]
Apparent magnitude (V)	12.62[2]
Apparent magnitude (B)	14.1[3]
Characteristics
Type	SABb[2]
Size	212,000 ly (65,010 pc)[2][note 1]
Apparent size (V)	2.5′ × 0.7′[2][note 1]
Other designations
UGC 6479, MGC+04-27-042, PGC 35347[3]

One supernova, SN 2020aavb (type Ia, mag. 16), was discovered in NGC 3697 on 23 November, 2020.^[5]