An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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sidereal hour angle
  زاویه‌ی ِ ساعتی ِ اختری  
zâviye-ye sâ'ati-ye axtari (#)
Fr.: angle horaire  

The angle on the celestial sphere measured westward from the hour circle of the vernal equinox to that of the celestial body.

See also: → sidereal; → hour angle.