M47 (NGC 2422)
Messier 47 (NGC 2422) is a open cluster located in the constellation Puppis, in the Orion Arm of the Milky Way Galaxy in the Local Group of galaxies.
M47 is best viewed during winter, is magnitude 4.5*, and can be viewed with naked eye. It is 30' 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.