ABELL 2151

The Hercules Cluster (Abell 2151) is a galaxy cluster located in the constellation of Hercules at a distance of more than one billion light-years from Earth.

It is included in the Abell Catalogue compiled in 1958[3] and has a richness class 2, as it consists of 129 galaxies. It is a type III cluster according to the Bautz-Morgan classification as it also contains numerous spiral galaxies. In addition, there are several interacting galaxies.

The Hercules Cluster is part of the Hercules Supercluster (SCl 160) which in turn is part of the Great Wall CfA2. The brightest galaxy is the elliptical NGC 6041.