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Unukalhai

Unuk Élhaia, Alpha Serpentis, 24 Serpentis

Proper NamesUnukalhai, Unuk Élhaia
Bayer DesignationAlpha Serpentis
Flamsteed Number24 Serpentis
HR (BSC)5854
HD140573
ConstellationSerpens (Caput)
Right Ascension15h 44m 16s
Declination+6° 25' 32"
Distance73 light years
22 parsecs
MagnitudeApparent: +2.6
Absolute: +0.9
Spectral ClassK2 Orange Giant
Optimum VisibilityMay/June

This orange giant has an apparent magnitude of +2.6, making it the brightest of the stars in the constellation Serpens, the Serpent. Its name derives from Arabic, meaning 'the Serpent's Neck'.

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