NGC 1817
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| SDSS recording | |
| AladinLite | |
| Constellation | bull |
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Position equinox : J2000.0 |
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| Right ascension | 05 h 12 m 26.3 s |
| declination | + 16 ° 41 ′ 03 ″ |
| Appearance
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| classification | III1m |
| Brightness (visual) | 7.7 likes |
| Angular expansion | 20 ′ |
| Physical data
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| Affiliation | Milky Way |
| distance | 6400 ly (1972 pc ) |
| history | |
| Discovered by | Wilhelm Herschel |
| Discovery time | February 19, 1784 |
| Catalog names | |
| NGC 1817 • C 0509 + 166 • OCl 463 • Cr 60 • Lund 156 • GC 1030 • H VII 4 • h 349 • | |
NGC 1817 is a galactic open star cluster in the constellation Taurus on the ecliptic . NGC 1817 has an angular diameter of 20 arc minutes and a magnitude of 7.7 mag. The object was discovered on February 19, 1784 by Wilhelm Herschel .