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 in size. The distance from earth is estimated at about 7000 light years.
|Observation data: J2000.0 epoch|
|Right ascension||5h 31m |
|Apparent magnitude (V)||10.1|
|Apparent dimensions (V)||3′|
The nebula is Sharpless catalog Sh 2-237.
|Wikimedia Commons has media related to NGC 1931.|