NGC 4274

NGC 4274
NGC 4274 by Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Coma Berenices
Right ascension	12h 19m 50.6s[1]
Declination	29° 36′ 52″[1]
Redshift	930 ± 7 km/s[1]
Distance	45 ± 15 Mly (13.9 ± 4.6 Mpc)[1]
Apparent magnitude (V)	10.4[2]
Characteristics
Type	(R)SB(r)ab [1]
Apparent size (V)	6.8′ × 2.5′[1]
Other designations
UGC 7377, MCG +05-29-060, PGC 39724[1]

NGC 4274 is a barred spiral galaxy located in the constellation Coma Berenices. It is located at a distance of circa 45 million light years from Earth, which, given its apparent dimensions, means that NGC 4274 is about 95,000 light years across. It was discovered by William Herschel in 1785.

NGC 4274 is characterised by its overlapping outer arms, forming a ring structure with apparent diameter 2.8′. The inner arms begin near the edge of the bulge and they are bright and dusty, with dust lanes that are more prominent at the near side. Outside the near-ring a set of fainter outer arms has been detected.^[3] These outer arms also form a ring, with diameter 5.9′. A third rings exists near the nucleus.^[4] The nuclear ring has semimajor axis 9", which corresponds to 680 parsec at that distance.^[5]

The bar of the galaxy is 5 kpc long.^[5] The galaxy features a nuclear bar that is almost perpendicular to the outer bar.^[6][7]

One supernova has been observed in NGC 4274: SN 1999ev. It was a type II supernova, discovered by Tom Boles on 7 November 1999. It peaked at magnitude 15.2.^[8]

NGC 4274 is the foremost member of a galaxy group known as NGC 4274 group. Other members of the group are NGC 4173, NGC 4245, NGC 4251, NGC 4283, IC 3215, NGC 4310, and NGC 4314.^[9] It is part of the Coma I Group which is part of the Virgo Supercluster.^[10]

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  NGC 4274 (HST)
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  NGC 4274 (SDSS DR14)

Wikimedia Commons has media related to NGC 4274.

• NGC 4274 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images