NGC 6440
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Globular cluster NGC 6440 |
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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 | 17 h 48 m 52.7 s |
| declination | -20 ° 21 ′ 35 ″ |
| Appearance | |
| Concentration class | V |
| Brightness (visual) | 9.3 mag |
| Angular expansion | 4.4 ' |
| Physical data | |
| Radial velocity | -78.7 km / s |
| distance | 27.7 kLj (8.5 kpc ) |
| history | |
| discovery | William Herschel |
| Discovery date | May 28, 1786 |
| Catalog names | |
| NGC 6440 • C 1746-203 • GCl 77 • ESO 589-SC8 • GC 77 • Bennett 98a • I 150 • h 1985 • GC 4331 | |
NGC 6440 is a globular cluster in the constellation Sagittarius and was discovered by William Herschel on May 28, 1786 .