NGC 6101
Globular cluster in the constellation Apus
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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]
| NGC 6101 | |
|---|---|
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 | [Fe/H] = –1.76[4] dex |
| Estimated age | 12.54 Gyr[4] |
| Other designations | Caldwell 107 |
