NGC 2346
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Planetary Nebula NGC 2346 |
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | unicorn |
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Position equinox : J2000.0 |
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| Right ascension | 07h 09m 23.0s |
| declination | -00 ° 48 ′ 33 ″ |
| Appearance | |
| Apparent brightness (visual) | 11.6 mag |
| Apparent brightness (B-band) | 11.8 mag |
| Angular expansion | 0.87 ′ × 0.87 ′ |
| Central star | |
| designation | HD 293373 |
| Apparent brightness | 10.96 mag |
| Spectral class | A5 |
| Physical data | |
| Redshift | +0.000073 |
| Radial velocity | +21.8 km / s |
| distance | 2000 ly |
| history | |
| discovery | William Herschel |
| Date of discovery | March 5, 1790 |
| Catalog names | |
| NGC 2346 • PK 215 + 3.1 • GC 1500 • H IV 65 • PN G215.6 + 03.6 | |
NGC 2346 is a planetary nebula in the constellation Unicorn , which is 2,000 light years from Earth . NGC 2346 comes from the binary star system HD 293373 . The two stars orbit each other every 16 days.
The object was discovered on March 5, 1790 by the German-British astronomer Wilhelm Herschel .