NGC 6101 | |
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Hubble Space Telescope image of the central region of NGC 6101 | |
Observation data ( J2000 epoch) | |
Class | X [1] |
Constellation | Apus |
Right ascension | 16h 25m 48.12s [2] |
Declination | –72° 12′ 07.9″ [2] |
Apparent magnitude (V) | 9 [3] |
Apparent dimensions (V) | 10.7' [3] |
Physical characteristics | |
Metallicity | = –1.76 [4] dex |
Estimated age | 12.54 Gyr [4] |
Other designations | Caldwell 107 |
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 20 cm (7.9 in) aperture to resolve individual stars. [3] Research revealed this cluster to contain an unexpected large number of black holes. [5]