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SAO 20575

BD +60 2522

Proper NameNone
Bayer DesignationNone
Flamsteed NumberNone
HR (BSC)None
Other designationsSAO 20575, BD +60 2522
Right Ascension23h 20m 45s
Declination+61° 11' 41"
Distancec.8,800 light years
c.2,700 parsecs
MagnitudeApparent: +8.7
Absolute: -3.5
Spectral ClassO7I Blue-white Supergiant
Optimum VisibilitySeptember / October (Usually visible from northern latitudes)

Where the intense stellar wind from the supergiant SAO 20575 meets the material of its surrounding nebula, a near-spherical front has formed. This is the 'bubble' that gives the Bubble Nebula its name. Imagery provided by Aladin sky atlas


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