NGC 4889 is a giant elliptical galaxy located in the constellation Coma Berenices. It is part of the Coma Cluster, which contains thousands of galaxies. NGC 4889 is notable for its large size and bright core, making it one of the most massive galaxies known. The galaxy is approximately 300 million light-years away from Earth and has an estimated mass of about 200 billion solar masses. NGC 4889 is also home to a supermassive black hole at its center, which is one of the largest known, with a mass estimated to be around 21 billion solar masses.