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SAO 20575

The blue star SAO 20575 or BD+602522 has pushed out the 10 light-years big Bubble Nebula NGC 7635 with its stellar wind. This nebula now hits a molecular cloud in one direction and gets slowed down by it.

Constellation: Cassiopeia
Distance: 7100 light-years
Spectral class: O6.5
Visual magnitude: 8.70
Mass: 9 * Sun
Diameter: 4 * Sun

Back: List of big and giant stars part 2
    SAO 20575 and NGC 7635
SAO 20575 in the Bubble Nebula NGC 7635
Photo: Brad Ehrhorn & Adam Block, NOAO, AURA, NSF

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