(sometimes spelled Corona Austrina; the Southern Crown; abbrev. CrA, gen. Coronae Australis; area 128 sq. deg.) A southern constellation which lies to the south-west of Sagittarius, and culminates at midnight in late June. The origin of the constellation is uncertain, though it was known to the ancient Greeks, who visualized it as a wreath. Its brightest stars were cataloged by Ptolemy (c