NGC 6583
| AladinLite | |
| Constellation | Sagittarius |
|
Position equinox : J2000.0 |
|
|---|---|
| Right ascension | 18 h 15 m 48.9 s |
| declination | -22 ° 08 ′ 15 ″ |
| Appearance
|
|
| classification | II1m |
| Brightness (visual) | 10.0 mag |
| Angular expansion | 5.0 ′ |
| Physical data
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| distance | 6650 ly (2040 pc ) |
| history | |
| Discovered by | Wilhelm Herschel |
| Discovery time | May 26, 1786 |
| Catalog names | |
| NGC 6583 • Cr 370 • ESO 590-SC11 • GC 4392 • H VII 31 • h 2001, 3739 • OCL 27 • C 1812-221 | |
NGC 6583 is an open star cluster (type definition "II1m") in the constellation Sagittarius and, according to various measurements, between 1700 and 2800 parsec from Earth. It was discovered on May 26, 1786 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "a cluster of vS and pretty compressed stars, considerably rich, 2 'or 3' diameter". During his observation with an 18-inch reflector telescope in 1847, John Herschel noted “oblong cluster, not v rich nor v comp, but well insulated, stars 12m, 5 ′ long, 4 broad”.