Tags: Star.
Alpha Coronae Australis (α CrA α Coronae Australis) is a star in the constellation Corona Australis. It is the only star in the constellation with a proper name Alphekka Meridiana (Alphekka South) after the brightest star in Corona Borealis Alphecca. In Chinese astronomy it is known as 鱉六 (the Sixth Star of the River Turtle). It is a Class A star like Vega rotating extremely fast on its axis close to its breakup velocity.
