| NGC 1931 | |
| Type: | emission |
| Type2: | reflection nebula |
| Epoch: | J2000.0 |
| Ra: | [1] |
| Dist Ly: | ~7000 |
| Appmag V: | 10.1 |
| Size 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 7000 light years.[3]
The nebula is Sharpless catalog Sh 2-237.