Alpha (α) Aquarius, Sadalmelik, is a third magnitude pale yellow star on the right shoulder of the Water-pourer, 1° south of the celestial equator.
Sadalmelik is from the Arabic Al Sa'd al Malik, the Lucky One of the King, sometimes given as Al Sa'd al Mulk, the Lucky One of the Kingdom, under which last title the 13th century Persian astronomical writer Al Kazwini and the 15th century Tartar astronomer Ulug Beg combined it with omicron (ο). It similarly was Sidus Faustum Regis with the astrologers. Burritt's Atlas of 1856 called it El Melik and Phard, but this last seems unintelligible.
With epsilon (ε, Enif) and theta Pegasus (θ Biham) it made up the 23d sieu (Chinese Moon Mansion) Goei, or Wei, Steep, or Danger, anciently Gui; but Brown says that the word signifies Foundation, alpha (α Sadalmelik) was the determinant star of this lunar station.
[Star Names, Their Lore and Meaning, Richard Hinckley Allen, 1889].