Astronomy:NGC 1931
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Short description: Nebula and open cluster in the constellation Auriga
| Emission nebula | |
|---|---|
| reflection nebula | |
 NGC 1931 | |
| Observation data: J2000.0 epoch | |
| Right ascension | 5h 31m[1] |
| Declination | +34° 15′[1] |
| Distance | ~7000 ly |
| Apparent magnitude (V) | 10.1[1] |
| Apparent dimensions (V) | 3′ |
| Constellation | Auriga |
NGC 1931 is an emission and reflection nebula in the constellation Auriga. The nebula has been referred to as a "miniature version of the Orion Nebula", as it shares some of the same characteristics. It is a mixed emission-reflection nebula, and contains a smaller version of the Trapezium in its hot young star cluster centered in the emission nebula. The entire cluster/nebula complex is only about 3 arcmin[2] in size. The distance from earth is estimated at about 7000 light years.[3]
The nebula is Sharpless catalog Sh 2-237.
References
- ↑ 1.0 1.1 1.2 "NGC 1931". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1931.
- ↑ NGC 1931 @ SEDS NGC objects pages
- ↑ A.K. Pandey; H.S. Mahra (1986). "Photometry of Open Cluster NGC 1931". Astrophysics and Space Science 120 (1): 107–113. doi:10.1007/BF00653902. Bibcode: 1986Ap&SS.120..107P.
External links
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