NGC 6101 (also known as Caldwell 107) is a globular cluster in the constellation Apus, which was discovered by James Dunlop and catalogued by him as Δ68. It is located at a distance of about 47,600 light-years from the Sun and about 36,500 light-years from the Galactic Center of the Milky Way. It requires a telescope of at least aperture to resolve individual stars. Research revealed this cluster to contain an unexpected large number of black holes.Monthly Notices of the Royal Astronomical Society. nov 2016, published online aug 22 2016
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