NGC 1813
 
NGC 1813 is a open cluster 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 1813:
| NGC: | NGC 1813 | 
| Type: | open cluster | 
| Constellation: | Mensa | 
| V-mag (visual): | 12.7 | 
| B-mag (blue): | 13.1 | 
| Right Ascension: | 05:02:40.28 | 
| Declination: | -70:19:04.60 | 
| Major axis: | 0.95 ' | 
| Minor axis: | 0.9 ' | 
| Angle (major axis): | 140° | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS