NGC 4328
Galaxy in the constellation Coma Berenices
From Wikipedia, the free encyclopedia
NGC 4328 is a nucleated dwarf elliptical[6][4][7] or lenticular galaxy[8][9] located about 48 million light-years away based on observations by the Hubble Space Telescope using the TRGB distance indicator.[2] NGC 4328 was discovered on March 21, 1784 by astronomer William Herschel[10] and is a member of the Virgo Cluster[3][11] in the "A'' subgroup.[3] On the sky, NGC 4328 is located in the constellation Coma Berenices.[10]
| NGC 4328 | |
|---|---|
SDSS image of NGC 4328. | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 23m 20.0s[1] |
| Declination | 15° 49′ 13″[1] |
| Redshift | 0.001616[1] |
| Heliocentric radial velocity | 484 km/s[1] |
| Distance | 48.4 Mly (14.84 Mpc)[2] |
| Group or cluster | Virgo Cluster (A subgroup)[3] |
| Apparent magnitude (V) | 14.3[1] |
| Characteristics | |
| Type | dE1 N,[4]SA0-[1] |
| Mass | 2.7×109 (Stellar mass)/5.6×109 (Total Mass)[5] M☉ |
| Size | ~32,000 ly (9.81 kpc) (estimated)[1] |
| Apparent size (V) | 1.22 × 0.98[1] |
| Other designations | |
| PGC 040209, VCC 0634, MCG +03-32-019[1] | |
NGC 4328 is a companion of Messier 100, along with NGC 4323 and lies 78,000 light-years (24 kiloparsecs) from Messier 100.[12][13] A possible passage of NGC 4328 close to Messier 100, may explain the lopsidedness in the southwestern portion of Messier 100. However, there are no strong signs of interactions in the H I distribution of Messier 100 which may be due to an interaction between the two galaxies. Despite this, recent observations are too shallow to detect tidal streams in the H I distribution of Messier 100 caused by a possible interaction between the two galaxies.[14]
NGC 4328 is host to a supermassive black hole with an estimated mass of 6.1×106 solar masses.[15]
