NGC 2103
 
NGC 2103 is a H II region located in the constellation of Mensa. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 2103:
| NGC: | NGC 2103 | 
| Type: | H II region | 
| Constellation: | Mensa | 
| V-mag (visual): | 10.8 | 
| Right Ascension: | 05:41:40.35 | 
| Declination: | -71:19:59.30 | 
| Major axis: | 4 ' | 
| Minor axis: | 3.5 ' | 
| Angle (major axis): | 40° | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS