Red rectangle nebula
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Protoplanetary Nebula Red rectangular nebula |
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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 | 6h 19m 58s |
| declination | -10 ° 38 ′ 15 ″ |
| Appearance | |
| Apparent brightness (visual) | 9.02 mag |
| Apparent brightness (B-band) | 9.33 mag |
| Central star | |
| designation | HD 44179, HIP 30089 |
| Physical data | |
| distance | 2300 ly |
| Age | 14,000 years |
| history | |
| Catalog names | |
| HD 44179 | |
The Red Rectangle Nebula (Engl. Red Rectangle Nebula ) is a protoplanetary nebula (precursor of a planetary nebula ) in the constellation Unicorn and is about 2,300 light years from the earth away. The name "Red Rectangle" goes back to the astronomers Martin Cohen and Mike Merril in 1973 .