Abū al-ʿUqūl Muḥammad ibn Aḥmad al-Ṭabarī (flourished inYemen during the 14th century) was a leadingastronomer inTa'izz and the first teacher of astronomy at theMuʾayyadiyya Madrasa. OfIranian origin, he is known for compiling the largest single corpus of tables for astronomical timekeeping in a specific latitude during medieval times, with over 100,000 entries.^[1] Another interesting feature of his work was determining the latitude of Ta'izz as 13° 37' (where the actual is 13° 35').^[1]

His epithet al-Tabarī suggests that he or his family stemmed fromTabaristan, a region in northernIran. He lived in Yemen during the time of theRasulid Sultanal-Ashraf Umar II and was contemporary to another famous astronomerMuḥammad ibn Abī Bakr al-Fārisī.^[1]

• Al-Zīj al-mukhtār min al-azyāj a compilation of different books ofzij that is based heavily on theḤākimī Zīj ofIbn Yunus. Some of his original additions were astronomical tables specific to Yemen.^[1]
• Mirʾāt al-zamān (lit. "Mirror of the Time"), a large corpus of tables for astronomical timekeeping computed for Ta'izz at latitude 13° 37' andobliquity 23° 35', including tables of thehour angle and the time since sunrise. It also contains tables of the solar altitude and longitude and the altitude of various other fixed stars. His altitude tables are similar to those used in Iraq or Iran, rather than ones found in Egypt. His tables are extant in copies found inMocha in 1795.^[1]
• Analmanac linking agricultural features to astronomical events.^[1]

• King, David A. (2007)."Abū al-ʿUqūl: Abū al-ʿUqūl Muḥammad ibn Aḥmad al-Ṭabarī". In Thomas Hockey; et al. (eds.).The Biographical Encyclopedia of Astronomers. New York: Springer. p. 10.ISBN 9780387310220. (PDF version)

• 14th-century Iranian astronomers
• Yemenite people of Iranian descent
• Astronomers of the medieval Islamic world

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