NGC 2259
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| AladinLite | |
| Constellation | unicorn |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 06 h 38 m 21.4 s |
| declination | + 10 ° 53 ′ 01 ″ |
| Appearance
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| classification | II2p |
| Brightness (visual) | 10.8 mag |
| Angular expansion | 3.5 |
| Physical data
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| Affiliation | Milky Way |
| distance | 10800 ly (3311 pc ) |
| history | |
| Discovered by | William Herschel |
| Discovery time | January 1, 1787 |
| Catalog names | |
| NGC 2259 • C 0635 + 109 • OCl 492 • Cr 108 • GC 1435 • H VI 28 • | |
NGC 2259 is a galactic open star cluster of the Trumpler type II2p in the constellation Monoceros north of the celestial equator . It has a diameter of 3.5 arc minutes and an apparent magnitude of 10.8 mag.
The object was discovered on January 1st, 1787 by William Herschel .