Perseus cluster | |
---|---|
Observation data (Epoch J2000) | |
Constellation(s) | Perseus |
Right ascension | 03hh 18m [1] |
Declination | +41° 30′[1] |
Brightest member | NGC 1275 |
Number of galaxies | >1000[1] |
Richness class | 2[2] |
Bautz–Morgan classification | II-III[2] |
Redshift | 0.01790 (5 366 km/s)[1] |
Distance | 73.6 Mpc (240.05 Mly) h−1 0.705[1] |
X-ray flux | 9.1×10−11 erg s−1 cm−2 (2–10 keV)[1] |
Other designations | |
Abell 426,[1] NGC 1275 Cluster,[1] LGG 88 |
The Perseus cluster (Abell 426) is a cluster of galaxies in the constellation Perseus. It has a recession speed of 5,366 km/s and a diameter of 863′.[1] It is one of the most massive objects in the known universe, containing thousands of galaxies immersed in a vast cloud of multimillion-degree gas.