NGC 2023
Appearance
This article needs additional citations for verification. (December 2007) |
Reflection nebula | |
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emission nebula | |
NGC 2023 next to the Horsehead nebula | |
Observation data: J2000 epoch | |
Right ascension | 05h 41m 37.9s[1] |
Declination | −02° 15′ 52″[1] |
Distance | 1467.7 ly (450 pc) |
Apparent dimensions (V) | 10'×10'[2] |
Constellation | Orion[2] |
Designations | NGC 2023,[2] LBN 954,[1] VDB 52, [XT95] 6, GN 05.39.1.02, RAFGL 806, [NYS99] C-23, IRAS 05391-0217, RX J0541.8-0217, [RK68] 38 |
NGC 2023 (also known as LBN 954[1]) is an emission and reflection nebula located in the constellation of Orion. It was discovered by William Herschel on 6 January 1785. Its size in the night sky is 10 × 10 arcminutes.[2] At a distance of 1467 light-years (450 parsecs) from Earth, it is located close to the Orion Nebula.[3][4]
The region emits fluorescent molecular hydrogen emission at near-infrared range.[5] It is four light-years in diameter,[4] making it one of the largest reflection nebulae ever discovered.[citation needed] It is illuminated by the B1.5 star HD 37903, the most luminous member of the stars in the Lynds 1630 molecular cloud.[4]
Gallery
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NGC 2023 taken with the VLT's FORS.
References
Wikimedia Commons has media related to NGC 2023.
- ^ a b c d "SIMBAD query result for NGC 2023". SIMBAD Astronomical Database. Retrieved 2 August 2016.
- ^ a b c d "NGC Objects: NGC 2000 - 2049".
- ^ "Sunset glow in Orion". NASA. 25 July 2011.
- ^ a b c "Astronomy Photo of the Day (APotD): 11/07/14 — NGC 2023". 7 November 2014. Archived from the original on 2014-11-07. Retrieved 2014-11-07.
- ^ Burton, Michael G.; Howe, J. E.; Geballe, T. R.; Brand, P. W. J. L. (1998). "Near-IR Fluorescent Molecular Hydrogen Emission from NGC 2023". Publications of the Astronomical Society of Australia. 15 (2): 194–201. Bibcode:1998PASA...15..194B. doi:10.1071/AS98194.
External links
- VizieR – NGC 2023
- NED – NGC 2023
- NGC 2023 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images