C107

A member of the Milky Way's halo of globular clusters, C107 lies outside the plane of the Galaxy at a distance of some 47,600 light years from the Sun. Typically for a globular cluster, it is an ancient structure, estimated to be some 12.5 billion years old (which makes it only a billion years younger than the Galaxy itself).

While globular clusters commonly form a distinctly spherical group of stars, C107 is a much looser cluster. On the Shapley-Sawyer scale, which ranges from class I (for extreme concentration towards the cluster's centre) to XII (for barely detectable concentration), C107 is rated as class X. Simulations of the cluster's patterns of gravity suggest that it contains a very large number of black holes among its stars.