NGC 4564 | |
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![]() NGC 4564 imaged by Sloan Digital Sky Survey | |
Observation data (J2000 epoch) | |
Constellation | Virgo |
Right ascension | 12h 36m 26.9913s [1] |
Declination | +11° 26′ 21.266″ [1] |
Redshift | 0.003809 [1] |
Heliocentric radial velocity | 1142 km/s [1] |
Distance | 57.2 Mly (17.55 Mpc) [1] |
Group or cluster | Virgo Cluster |
Apparent magnitude (V) | 12.05 [1] |
Characteristics | |
Type | E6 [1] |
Size | ~63,200 ly (19.38 kpc) (estimated) [1] |
Apparent size (V) | 3.5′ × 1.5′ [1] |
Other designations | |
VCC 1664, UGC 7773, MCG +02-32-150, PGC 42051, CGCG 070-186 [1] |
NGC 4564 is an elliptical galaxy located about 57 million light-years away [2] in the constellation Virgo. [3] NGC 4564 was discovered by astronomer William Herschel on March 15, 1784. [4] [5] The galaxy is also a member of the Virgo Cluster. [6] [7]
NGC 4564 has an estimated population of 213 ± 31 globular clusters. [8] It is the host of a supermassive black hole with an estimated mass of about 56 million suns (0.56+0.03
−0.08×108 M☉ ). [9]
One supernova has been observed in NGC 4564: SN 1961H (type unknown, mag. 11.2) was discovered by Italian amateur astronomer Giuliano Romano on 2 May 1961. [10] [11] A spectrum taken indicated that it was probably of Type I. [10]