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)
ConstellationLeo
Right ascension11h 28m 50.380s[1]
Declination+20° 47′ 42.61″[1]
Redshift0.020884[2]
Heliocentric radial velocity6261 km/s[2]
Distance291.57 ± 24.07 Mly (89.395 ± 7.379 Mpc)[2]
Group or clusterHCG 53[3]
Apparent magnitude (V)12.62[2]
Apparent magnitude (B)14.1[3]
Characteristics
TypeSABb[2]
Size212,000 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]

References

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  1. ^ a b 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. (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. ISSN 0004-6256. S2CID 18913331.
  2. ^ a b c d e f g h "NED results for object NGC 3697". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 9 November 2017.
  3. ^ a b c d "NGC 3697". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 November 2017.
  4. ^ a b "New General Catalog Objects: NGC 3650 - 3699". cseligman.com. Retrieved 9 November 2017.
  5. ^ Transient Name Server entry for SN 2020aavb. Retrieved 24 March 2023.

Notes

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  1. ^ a b POSS1 103a-O values used.
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