An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Sadr (γ Cygni)
  صدر  
Sadr (#)
Fr.: Sadr  

The star that lies at the center of → Cygnus’s → Northern Cross. This F8 → supergiant is situated some 1,500 → light-years away and has an → apparent visual magnitude of 2.20.

See also: From Ar. as-sadr (الصدر) “breast” (of the Cygnus).