| NGC 4564 | |
|---|---|
 NGC 4564 imaged bySloan Digital Sky Survey | |
| Observation data (J2000epoch) | |
| 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 orcluster | 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 anelliptical galaxy located about 57 millionlight-years away[2] in the constellationVirgo.[3] NGC 4564 was discovered by astronomerWilliam Herschel on March 15, 1784.[4][5] The galaxy is also a member of theVirgo Cluster.[6][7]
NGC 4564 has an estimated population of 213 ± 31globular clusters.[8] It is the host of asupermassive black hole with an estimated mass of about 56 million suns (0.56+0.03
−0.08×108 M☉).[9]
Onesupernova 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]
