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Dschubba

Iclarclau, Delta Scorpii, 7 Scorpii

Blue Star in Scorpius

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Proper Names	Dschubba, Iclarclau (sometimes spelt Iclarclav)
Bayer Designation	Delta Scorpii
Flamsteed Number	7 Scorpii
HR (BSC)	5953
HD	143275
Constellation	Scorpius
Right Ascension	16h 0m 20s
Declination	-22° 37' 18"
Distance	491 light years 151 parsecs
Magnitude	Apparent: +2.3 Absolute: -3.6
Spectral Class	B0.3IV Blue Subgiant
Optimum Visibility	June
Notes	Dschubba is a binary and possibly a ternary system, with the primary subgiant a variable star of the Gamma Cassiopeiae type. Rapid rotation causes material to erupt from Dschubba's equator, creating a ring of matter around the star, and causing its apparent brightness to vary over time.

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