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SADALMELIK (Alpha Aquarii). Though possessed of a rather obscure name, Sadalmelik, the Alpha star of the constellation Aquarius (the Water Carrier), is hardly without its intrigue.
Sadalmelik is a yellow G2Ib supergiant having a luminosity of perhaps 3000 times that of the sun. The spectral type implies a temperature of about 5400 K, a mass maybe 10 times that of the sun, and a diameter more than 100 times that of the sun.
Alpha Aquarii ("Sadalmelik") and beta Aquarii ("Sadalsuud") are twin supergiants with nearly identical names. The names mean, respectively, "The Lucky One of the King" and "The Luckiest of the Lucky".
The second brightest star in the constellation is [265], alpha Aquarii, or Sadalmelik, a gigantic star 760 light-years away from Earth with a diameter 60 times that of our Sun. Sadalmelik is also classified as a G-type (yellow) supergiant.
Alpha Aquarii is called Sadalmelik, from sa'd al-malik, usually translated as ‘the lucky stars of the king'. Beta Aquarii is called Sadalsuud, from sa'd al-su'ud, possibly meaning ‘luckiest of the lucky'.
Alpha Aquarii, Sadalmelik, Sadal Melik, Sadalmelek, Sadlamulk, El Melik, Saad el Melik, Ruchbah
2.95
760
* sacd al-malik/mulk Luck of the king/kinghood
* Rucbah shared with δ Cassiopeiae
γ
48
Gamma Aquarii, Sadachbia, Sadalachbia
3.86
158 ...
Named stars: Alpha Aqr (Sadalmelik), Beta Aqr (Sadalsuud), Gamma Aqr (Sadachbia), Delta Aqr (Scheat), Epsilon Aqr (Albali)
Info: Aquarius is one of the 13 zodiacal constellations (that is, the Sun passes through it in the course of the year).
Brightest Stars: Sadalsuud, Sadalmelik, Sadachbia. (Their Arabic names translate into "The luck of the king", "The luck of lucks", and "The lucky star of hidden things".
Albali (ε Aqr), Albulaan (ν Aqr), Ancha (θ Aqr), Hydor (λ Aqr), Hydor (η Aqr), Sadachbia (γ Aqr), Sadalsuud (β Aqr), Sadalmelik (α Aqr), Sadaltager (ζ1 Aqr), Situla (χ Aqr), Skat, (Scheat, δ ...
Alpha Aquarii (the brightest star in Aquarius) is called Sadalmelik (meaning the Lucky One of the King) and beta Aquarii (the second-brightest star in Aquarius) is named Sadalsuud (meaning the Luckiest of the Lucky); they are twin supergiants.
 See also: Star, Aquarius, Sadalsuud, Magnitude, Sun
  
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