NGC 4328

NGC 4328 is a nucleated dwarf elliptical or lenticular galaxy located about 48 million light-years away based on observations by the Hubble Space Telescope using the TRGB distance indicator. NGC 4328 was discovered on March 21, 1784 by astronomer William Herschel and is a member of the Virgo Cluster in the "A'' subgroup. On the sky, NGC 4328 is located in the constellation Coma Berenices.
NGC 4328 is a companion of Messier 100, along with NGC 4323 and lies from Messier 100. 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.
NGC 4328 is host to a supermassive black hole with an estimated mass of 6.1 solar masses.