ARKAB PRIOR (Beta-1 Sagittarii). "In 1603 Johannes Bayer gave Greek letters to the stars according to the apparent brightnesses," so goes the story. Sagittarius, however, shows how fickle the rule.
Beta-2 Sagittarii, Arkab Posterior
4.27
* عرقوب carqÅ"b hamstring + posterior
θ1 ...
Arkab Prior (Beta 1 Sgr)
Arkab Posterior (Beta 2 Sgr)
Nash (Gamma 2 Sgr)
Kaus Meridionalis (Delta Sgr)
KAUS AUSTRALIS (Epsilon Sgr)
Ascella (Zeta Sgr)
Kaus Borealis (Lambda Sgr)
Ain al Rami (Nu 1 Sgr)
Albaldah (Pi Sgr)
NUNKI (Sigma Sgr) ...
Arkab Beta Sagittarii
Arkab Prior Beta-1 Sagittarii
Arkab Posterior Beta-2 Sagittarii
Arm Eta Capricorni
Arneb Alpha Leporis
Arrakis Mu Draconis
Ascella Zeta Sagittarii
Asellus Australis Delta Cancri
Asellus Borealis Gamma Cancri ...
The star's traditional name is Arkab ("hamstring"). [7312] beta-1 Sagittarii, or Arkab Prior, is itself a binary star composed of two dwarfs. [7314] beta-2 Sagittarii, or Arkab Posterior, is a white giant 137 light-years distant.
Ain al Rami (ν1 Sgr), Albaldah(π Sgr), Alfecca Meridiana (α CrA), Al Nasl (γ Sgr), Arkab Prior (β1 Sgr), Arkab Posterior (β2 Sgr), Ascella (ζ Sgr), Kaus Australis (ε Sgr), Kaus Borealis (λ Sgr), ...
Beta Sagittarii is called Arkab, from the Arabic name meaning ‘the archer's Achilles tendon'. Gamma Sagittarii is Alnasl, from the Arabic meaning ‘the point', referring to the tip of the archer's arrow.
Sagittarius ("sagitta" is Latin for `arrow'), although several stars carry Arabic names which identify just which portion of the constellation they represent: Alpha Sagittarii is named "Rukbat": (Rukbat al Rami=Archer's knee), and beta Sgr is "Arkab" ...
 See also: Constellation, Kaus Australis, Rukbat, Sagitta, Star
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