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Sadalsud, Beta Aquarii, 22 Aquarii

Proper NamesSadalsuud, Sadalsud
Bayer DesignationBeta Aquarii
Flamsteed Number22 Aquarii
HR (BSC)8232
Right Ascension21h 31m 34s
Declination-5° 34' 16"
Distance537 light years
165 parsecs
MagnitudeApparent: +2.9
Absolute: -3.2
Spectral ClassG0Ib yellow supergiant
Optimum VisibilityAugust / September
NotesSadalsuud is the brightest star in the constellation of Aquarius, with a magnitude fractionally brighter than the Alpha star of the constellation, Sadalmelik to the northwest. The two stars are both evolved supergiants that apparently originated in the same stellar nursery, and though the two are now separated from one another, they remain less than a hundred light years apart.


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