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Al Nair al Batn, Zeta Centauri

Proper NamesAlnair, Al Nair al Batn
Bayer DesignationZeta Centauri
Flamsteed NumberNone
HR (BSC)5231
Right Ascension13h 55m 32s
Declination-47° 17' 18"
Distance382 light years
117 parsecs
MagnitudeApparent: +2.5
Absolute: -2.8
Spectral ClassB2.5IV blue subgiant
Optimum VisibilityMay (Usually visible from southern latitudes)
NotesZeta Centauri shares the common name Alnair (meaning 'the bright') with another unrelated star, Alpha Gruis. Physically, both these stars are blue subgiants: Zeta Centauri is the larger and more luminous of the two, but its great distance means that it shines less brightly in the skies of Earth.


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