Alpha Aquarii

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Alpha Aquarii (α Aqr / α Aquarii) is a star in the constellation Aquarius. It also has the traditional names Sadalmelik, which derives from an Arabic expression سعد الملك sa^{cd al-malik/mulk meaning "Luck of the king/kinghood", as well as Rucbah, which it shares with Delta Cassiopeiae. It is only one of two stars with ancient proper names to lie within a degree of the celestial equator. The origin of the Arabic name is quite lost to history.}

^{Sadalmelik has a stellar magnitude of +2.95 m. It has a diameter 80 times that of the Sun, and its luminosity is 6000 times greater, giving it the spectral class G2Ib. It is a member of a rare class of stars known as yellow supergiants.}

^{Sadalmelik is about 760 light-years from Earth.}

^{[edit] Location}

^{The star's location in the sky is shown in the following map of the constellation Aquarius:}

^{Constellation of Aquarius}