NGC 5897
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Globular cluster NGC 5897 |
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| Image taken with a 14.5-inch Ritchey-Chrétien telescope | |
| AladinLite | |
| Constellation | Libra |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 15 h 17 m 24.4 s |
| declination | -21 ° 01 ′ 36 ″ |
| Appearance | |
| Concentration class | XI |
| Brightness (visual) | 8.4 mag |
| Angular expansion | 11 ' |
| Physical data | |
| Affiliation | Milky Way |
| distance | 40 kLj (12.2 kpc ) |
| history | |
| discovery | William Herschel |
| Discovery date | March 10, 1785 |
| Catalog names | |
| NGC 5897 • C 1514-208 • GCl 33 • ESO 582-SC2 • GC 4075 • H VI 19, h 3596 | |
NGC 5897 is a globular cluster in the constellation Libra . This satellite of the Milky Way , which is quite distant at around 40,000 light years, has a diameter of more than 170 light years. It is an extremely loosely structured representative of its class, because it has a very low star density even in its center.
The stars in the cluster show only a good one percent of the metallicity of the sun , which means that they were formed before the galaxy formed a disk and spiral arms .
The object was discovered by Wilhelm Herschel on March 10, 1785 .