NGC 4328

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, rescent 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]

See also

• List of NGC objects (4001–5000)
• NGC 4323