Kesteven 79 - supernova remnant nebula
Kesteven 79 , is a supernova remnant nebula located in the constellation Aquila.
Kesteven 79 is magnitude and is in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.
* One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.