M46 (NGC 2437)
Messier M46 (NGC 2437) is a open cluster located in the constellation Puppis, in the Orion Arm of the Milky Way Galaxy. in the Local Group of galaxies.
Messier M46 is best viewed during winter, is magnitude 6.5*, and can be viewed with small binoculars. It is 27' in size. For reference, the full moon is 30' (arc minutes) in size.
* The naked eye can see up to magnitude 8 objects under ideal dark sky conditions.
Find your inner astronomer. Your complete guide to amateur astronomy.