“Hadar” was arbitarily applied to β Cen in recent times. Scientific Arabic authors ventured to identify these stars as α/β Cen or α/β Col, but exactly what two stars were orginially intended, and the significance of their names, is unkown. From some Indigenous Arabic name ḥaḍāri (an untranslated proper name), for one of a pair of stars, the other one being al-wazn. Β Centauris has the traditional names Hadar and Agena. The primary component is a variable binary (Aa and Ab). The three stars are designated Beta Centauri Aa, Ab and B. Centaurus Constellation The Sun joins Agena on November 16įixed star Agena, Beta Centauri, is a triple star system situated on the left front knee of Centaur, Centaurus Constellation.Ĭombined magnitude 0.61, spectral type B1 III + B1 III + B1 V, color blue-white.
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