Perseus cluster
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The Perseus cluster is a cluster of galaxies in the constellation Perseus. It has a recession speed of 5,366 km/s and a diameter of 863′. It is one of the most massive objects in the known universe, containing thousands of galaxies immersed in a... Wikipedia
Distance to Earth: 240.1 million light years
Apparent magnitude (V): 13
Bautz–Morgan classification: II-III
Brightest member: NGC 1275
Constellation(s): Perseus
Distance: 73.6 Mpc (240.05 Mly) h−1; 0.705
Number of galaxies: >1000