EntityQ1107105· pop 29· linked from 275 articles

Q1107105

galaxy

Key facts

Constellation: Ursa Major
Right ascension: 11 50 38.9222
Declination: +55 ° 21 ′ 13.942 ″
Heliocentric radial velocity: 955 ± 1 km/s
Distance: 27.06 ± 14.19 Mly (8.297 ± 4.352 Mpc )
Group or cluster: NGC 3631 Group (LGG 241)
Type: (R')SA(rs)d?
Size: ~23,600 ly (7.24 kpc ) (estimated)
Apparent size v: 2.6′ × 2.6′

via Wikipedia infobox

Wikidata facts

Image: NGC 3913 hst 09042 606.png

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Article

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). However, three non redshift measurements give a much closer distance of 27.06 ± 14.19 Mly (8.297 ± 4.352 Mpc). It was discovered by German-British astronomer William Herschel on 14 April 1785. 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.

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.