A cluster of hundreds of galaxies whose center lies only 170 million light-years
away in the constellation Centaurus. Like other
large clusters of galaxies, it is filled
with gas at temperatures of 10 million K, making it an extended, luminous
source of X-rays. The brightest individual
member is the 11th magnitude elliptical
NGC 4696. Together with the IC 4329 Cluster and Hydra I, the Centaurus Cluster
is part of the Hydra-Centaurus Supercluster.