| NGC 1931 | |
|---|---|
Nebula and Open Cluster NGC 1931 |
|
| Observation data: J2000.0 epoch | |
| Type | Emission/Open Cluster |
| Right ascension | 5h 31m[1] |
| Declination | +34° 15′[1] |
| Distance | ~7000 ly |
| Apparent magnitude (V) | 10.1[1] |
| Apparent dimensions (V) | 3′ |
| Constellation | Auriga |
| Physical characteristics | |
| See also: Diffuse nebula, Lists of nebulae | |
NGC 1931, found in the constellation Auriga 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.
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