Description
NGC 7635
Nebula
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The “bubble” is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575. Wikipedia
Distance to Earth: 11,090 light years
Radius: 3.5 light years
Distance: 7100 to 11000 ly (3,400 pc)
Apparent dimensions (V): 15′ × 8′
Coordinates: RA 23h 20m 48s | Dec +61° 12′ 6″
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