NGC 1931

NGC 1931

NGC 1931
emission nebula
reflection nebula
Nebula and Open Cluster 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, 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.


  1. ^ a b c "SIMBAD Astronomical Database". Results for NGC 1931. Retrieved 2008-11-16. 
  2. ^ NGC 1931 @ SEDS NGC objects pages
  3. ^ A.K. Pandey, H.S. Mahra (1986). "Photometry of Open Cluster NGC 1931". Astrophysics and Space Science 120 (1): 107–113.  

External links

  • NGC 1931 @ Wikisky
  • NGC 1931 @ SEDS NGC objects pages
  • Sharpless 237