NGC 2539
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| AladinLite | |
| Constellation | Aft deck of the ship |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 08 h 10 m 37.0 s |
| declination | −12 ° 49 ′ 14 ″ |
| Appearance
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| classification | II1m |
| Brightness (visual) | 6.5 mag |
| Brightness (B-band) | 7.05 likes |
| Angular expansion | 15th |
| Number of stars | 170 |
| Physical data
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| Radial velocity | (+26.1 ± 1.7) km / s |
| distance | 4400 ly (1363 pc ) |
| history | |
| Discovered by | William Herschel |
| Discovery time | January 31, 1785 |
| Catalog names | |
| NGC 2539 • C 0808-126 • OCl 611 • Mel 83 • Cr 176 • Lund 431 • GC 1630 • H VII 11 • h 3114 • | |
NGC 2539 is a 6.5 mag bright open star cluster with an angular extent of 22 'in the constellation Puppis . The star cluster is about 650 million years old and contains about 170 stars. The designation stands for the number in the New General Catalog .
The star cluster is about 4400 light years away. In the foreground of NGC 2539 is the star 19 Puppis , which, however, does not belong to the star cluster and is only 185 light years away.
The object was discovered on January 31, 1785 by the German-British astronomer Wilhelm Herschel .