NGC 2346
Planetary Nebula NGC 2346 |
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Photo from the Hubble Space Telescope | |
AladinLite | |
Constellation | unicorn |
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 .