NGC 3913

NGC 3913 is a spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background for is 1,124±12 km/s, which corresponds to a Hubble distance of 54.1 ± 3.8 Mly (16.58 ± 1.17 Mpc).^[1] However, three non redshift measurements give a much closer distance of 27.06 ± 14.19 Mly (8.297 ± 4.352 Mpc).^[2] It was discovered by German-British astronomer William Herschel on 14 April 1785.^[3] It was also observed by Lewis Swift on 8 May 1890, which resulted in the galaxy also being listed in the Index Catalogue as IC 740.^[3]

ConstellationUrsa Major

Right ascension11^h 50^m 38.9222^s[1]

Declination+55° 21′ 13.942″^[1]

Redshift0.003185^[1]

Quick facts Observation data (J2000 epoch), Constellation ...

NGC 3913
NGC 3913 imaged by Legacy Surveys
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	11h 50m 38.9222s[1]
Declination	+55° 21′ 13.942″[1]
Redshift	0.003185[1]
Heliocentric radial velocity	955±1 km/s[1]
Distance	27.06 ± 14.19 Mly (8.297 ± 4.352 Mpc)[1]
Group or cluster	NGC 3631 Group (LGG 241)
Apparent magnitude (V)	12.6[1]
Characteristics
Type	(R')SA(rs)d?[1]
Size	~23,600 ly (7.24 kpc) (estimated)[1]
Apparent size (V)	2.6′ × 2.6′[1]
Other designations
HOLM 296A, IRAS 11480+5537, IC 740, UGC 6813, MCG +09-20-001, PGC 37024, CGCG 268-092[1]

Close

The SIMBAD database lists NGC 3913 as an Active Galaxy Nucleus Candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.^[4]