Alpha Capricorni

Alpha Capricorni (α Capricorni, abbreviated Alpha Cap, α Cap) is an optical double star in the constellation of Capricornus. The two physically unrelated components are designated:
They are separated by 0.11° on the sky, and resolvable with the naked eye, similar to Mizar and Alcor. α¹ Capricorni is fainter (apparent magnitude 4.27) than α² Capricorni (apparent magnitude 3.58).
Nomenclature.
"α Capricorni" (Latinised to "Alpha Capricorni") is the system's Bayer designation; "α¹" and "α² Capricorni", those of the two components.
Alpha Capricorni bore the traditional names "Algedi", "Algiedi", "Al Giedi" or "Giedi", derived from the Arabic "الجدي" "al-jady" "the billy goat" or "kid". It also refers to the entire constellation of Capricornus. "Giedi" is sometimes also associated with Beta Capricorni. "α¹" and "α² Capricorni" were also called "Prima Giedi" and "Secunda Giedi", respectively. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalogue and standardize proper names for stars. The WGSN approved the name "Algedi" for "α² Capricorni" on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names.
Alpha Capricorni is known as 牛宿二 (the Second Star of the Ox) in Chinese astronomy.