Beta Scorpii [SEP] constellation
Beta Scorpii
Beta Scorpii (β Scorpii, abbreviated Beta Sco, β Sco) is a multiple star system in the southern zodiac constellation of Scorpius. It bore the traditional proper name of Acrab , though the International Astronomical Union now regards that name as applying only to the β Scorpii Aa component.
Components.
Observed through a small telescope, Beta Scorpii appears as a binary star with a separation between the two components of 13.5 arcseconds and a combined apparent magnitude of 2.50. This pair, designated β¹ Scorpii and
"B", "C", "E", "Ea" and "Eb" - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).
Beta Scorpii bore the traditional names "Acrab", "Akrab" or "Elacrab", all deriving from the Arabic name () "al-'Aqrab" 'the Scorpion' for the whole constellation, as well as Graffias , Italian for "the claws",