Manatee Nebula - supernova remnant nebula
Manatee Nebula , is a supernova remnant nebula located in the constellation Aquila.
Manatee Nebula 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.