NGC 5917

NGC 5917 is a spiral galaxy located in the constellation of Libra. It was discovered by English astronomer John Herschel on 16 July 1835.^[8] This galaxy is located at a distance of 90.4 ± 6.2 million light-years (27.73 ± 1.90 Mpc) from the Milky Way,^[3] and is receding with a heliocentric radial velocity of 1,934.1 km/s.^[4] It is interacting with the neighboring galaxy, PGC 54817, at an angular separation of 4.2′. Tidal tails extend from PGC 54817 to the halo of NGC 5917.^[5]

NGC 5917
NGC 5917 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Libra[1]
Right ascension	15h 21m 32.550s[2]
Declination	−07° 22′ 37.52″[2]
Redshift	0.00635[3]
Heliocentric radial velocity	1,934.1[4]
Distance	90.4 ± 6.2 Mly (27.73 ± 1.90 Mpc)[3]
Apparent magnitude (V)	14.5[5]
Apparent magnitude (B)	13.7[3]
Characteristics
Type	Sb pec:[5]
Apparent size (V)	1.60′ × 0.9′[6]
Notable features	Interacting galaxy
Other designations
GSC 05014-00224, IRAS F15188-0711, 2MASX J15213256-0722376, NGC 5917, LEDA 54809, MCG -01-39-002, PGC 54809[7]

One supernova has been observed in NGC 5917. SN 1990Q (type II, mag. 18) was discovered by Christian Pollas on 24 June 1990.^[9][10][11]