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Zubeneschamali

Zubenelschemali, Zuben Elschemali, Zubenesch, Beta Librae, 27 Librae

Blue Star in Libra

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Proper Names	Zubeneschamali, Zubenelschemali, Zuben Elschemali, Zubenesch
Bayer Designation	Beta Librae
Flamsteed Number	27 Librae
HR (BSC)	5685
HD	135742
Constellation	Libra
Right Ascension	15h 17m 0s
Declination	-9° 22' 58"
Distance	185 light years 57 parsecs
Magnitude	Apparent: +2.6 Absolute: -1.2
Spectral Class	B8V Blue Main Sequence Star
Optimum Visibility	May / June
Notes	The brightest star in the constellation of Libra is a hot, rapidly-rotating body. Though only third magnitude, there is some historical evidence that it was once much brighter than it is today (though, if so, the reason for the star's considerable dimming remains mysterious).

A blue dwarf star in the constellation of Libra, with an invisible companion that makes it slightly variable in magnitude.

The companion star of Zubeneschamali isn't directly observable from Earth, but its presence can be inferred from periodic variations in the magnitude of the primary star.

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Libra

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