NGC 6558
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Globular cluster NGC 6558 |
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Sagittarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 18 h 10 m 18.4 s |
| declination | -31 ° 45 ′ 49 ″ |
| Appearance | |
| Brightness (visual) | 8.6 likes |
| Angular expansion | 4.2 ' |
| Physical data | |
| distance | 24.1 kLj |
| history | |
| discovery | John Herschel |
| Discovery date | August 3, 1834 |
| Catalog names | |
| NGC 6558 • C 1807-317 • GCl 89 • ESO 456-62 • Mel 194 • VDBH 259 • Cr 368 | |
NGC 6558 is a globular cluster in the constellation Sagittarius, 24,100 light years away . The globular cluster was discovered in 1834 by the astronomer John Herschel with his 18.7-inch telescope and the discovery was later recorded in the New General Catalog .