Sh2-162, also known as the Bubble Nebula, NGC7635, or Caldwell 11, is an emission nebula in the constellation Cassiopeia ~ it lies close to the open cluster Messier 52.
Guides to the night sky
Deep Sky Object:
– Sh2-168 (NGC7635 / C11 / Bubble Nebula)
– M52 (open cluster)
Constellation:
– Cassiopeia (The Queen)