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Kappa Scorpii

Proper NameGirtab
Bayer DesignationKappa Scorpii
Flamsteed NumberNone
HR (BSC)6580
Right Ascension17h 42m 29s
Declination-39° 1' 48"
Distance483 light years
148 parsecs
MagnitudeApparent: +2.4
Absolute: -3.5
Spectral ClassB1.5III Blue Giant
Optimum VisibilityJune / July
NotesGirtab forms part of the stinger at the end of Scorpius' tail, as well as belonging to the hook of the Fishhook formation. This is a spectroscopic binary, a system of two giant stars pursuing an eccentric orbit around one another that can bring them closers together than Earth's distance from the Sun.


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