Caldwell 107
Star cluster in Apus · 11,000 light-years
🔭 Explore Caldwell 107 in the 3D map →View Caldwell 107 images →| Type | Star cluster |
|---|---|
| Constellation | Apus |
| Right ascension | 16h 25m 49s |
| Declination | −72° 12′ |
| Object distance | 11,000 light-years |
| Apparent magnitude | 10.1 |
| Apparent size | 4.5′ (arc-minutes) |
| Approx. true diameter | 14.4 light-years across |
| Also known as | C107 · NGC 6101 |
Caldwell 107 is a star cluster (NGC 6101) in Apus — a family of stars bound by gravity. It appears as number 107 in the Caldwell catalogue, Sir Patrick Moore's 1995 list of 109 bright deep-sky objects for amateur astronomers. It spans roughly 4.5 arc-minutes on the sky. At about magnitude 10.1, it shows up in a small backyard telescope.
Although it appears about 4.5′ wide on the sky, its real span is roughly 14.4 light-years — the difference is a measure of how far away it lies.
Observing Caldwell 107
Caldwell 107 lies in the constellation Apus and is best placed in the evening sky around May. Its maximum altitude above the horizon depends on your latitude. It sits far enough south to be circumpolar from mid-southern latitudes, and never rises for most of the northern hemisphere. A small backyard telescope will show it; binoculars may hint at it under dark skies.
See Caldwell 107 in Universe Finder
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Sources
- Position, magnitude and angular size from the OpenNGC catalogue (Mattia Verga).
- Object identity cross-referenced with SIMBAD (CDS, Strasbourg).
- Image credits and the original observation source are linked with each photograph.
Related objects
- Pleiades — star cluster
- Hercules Cluster — star cluster
- Small Sgr Star Cloud — star cluster
- Messier 25 — star cluster
- Messier 103 — star cluster