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

Proper NamesZubeneschamali, Zubenelschemali, Zuben Elschemali, Zubenesch
Bayer DesignationBeta Librae
Flamsteed Number27 Librae
HR (BSC)5685
Right Ascension15h 17m 0s
Declination-9° 22' 58"
Distance185 light years
57 parsecs
MagnitudeApparent: +2.6
Absolute: -1.2
Spectral ClassB8V blue main sequence star
Optimum VisibilityMay / June
NotesThe 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).

Imagery provided by Aladin sky atlas

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

Image of Zubenelschemali

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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