Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  LBN 548  ·  LBN 549  ·  LDN 1231  ·  NGC 7635  ·  Sh2-162
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The Bubble nebula, MARK Shelton
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The Bubble nebula

Getting plate-solving status, please wait...
The Bubble nebula, MARK Shelton
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The Bubble nebula

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Description

NGC 7635, also known as the Bubble NebulaSharpless 162, or Caldwell 11, is an H II region[1]emission nebula in the constellation Cassiopeia. It lies close to the direction of the open clusterMessier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7[1]magnitude young central star, SAO 20575 (BD+60°2522).[7] The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.[7] It was discovered in 1787 by William Herschel.[5] The star BD+60°2522 is thought to have a mass of about 44 M☉

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The Bubble nebula, MARK Shelton

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