Hydra Cluster

Hydra Cluster
Hydra A galaxy cluster Chandra X-ray; 30 October 1999
Observation data (Epoch J2000)
Constellation(s)	Hydra
Right ascension	09h 18.0m
Declination	−12° 05′
Number of galaxies	157
Richness class	1
Bautz-Morgan classification	III
Redshift	0.0548 (16452 km/s)
Distance (co-moving)	222 Mpc (724.1 Mly) h−1 0.705
X-ray flux	6.1×10−11erg s−1 cm−2 (0.5—2 keV)
Other designations
Abell 1060
See also: Galaxy groups, Galaxy clusters, List of galaxy clusters

The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra. The cluster spans about ten million light years and has an unusually high proportion of dark matter. The cluster is part of the Hydra-Centaurus Supercluster located 158 million light years from earth. The cluster's largest galaxies are elliptical galaxies NGC 3309 and NGC 3311 and the spiral galaxy NGC 3312 all having a diameter of about 150,000 light years. In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.

Coordinates: 10^h 36.9^m 00^s, −27° 32′ 00″