Zīj-i Khāqānī dar takmīl-i Zīj-i Īlkhānī

Title (arabic)

زيج خاقاني در تكميل زيج إيلخانی

Title (translit)

Zīj-i Khāqānī dar takmīl-i Zīj-i Īlkhānī


Zīj-i Khāqanī dar takmīl-i zīj-i īlkhānī (Kāshī)
Zīj-i Khāqanī
زيج خاقاني





Text type


Version of

Dedicated to


Al-Kāshī (d. 1429) presented his Zīj-i Khāqānī dar takmīl-i Zīj-i Īlkhānī (Khāqānī Tables Complementing the Ilkhanid Tables) to Ulugh Beg upon his arrival in Samarqand. Despite his criticism of Ṭūsī’s Zīj-i Īlkhānī, Kashi adopted its planetary mean motion parameters in his zīj. The treatise consists of an introduction and 6 sections (organized in 3 parts: a technical glossary of terms used in the treatise; explanation of operations; and proofs of these operations). See also the Zīj of Ulugh Beg. In the preface, Ulugh Beg specifically names Kāshī, Qāḍīzāde, and ʿAlī Qushjī as contributors.



Manuscript Witnesses

27 witnesses:

Literature References

Dena: Fihristwāra-Yi Dastniwishthā-Yi Īrān. 2010. 12 vol.. Tehran: Muṣṭafā Dirāyatī.

Vol. 5, p. 1282. Details witnesses located in repositories in Qum, Rasht, and Tehran.

Rozenfeld, Boris, and Ekmeleddin İhsanoğlu. 2003. Mathematicians, Astronomers And Other Scholars Of Islamic Civilisation And Their Works (7Th-19Th C.). Istanbul: Research Centre for Islamic History, Art, and Culture.

Pp. 270-1 (no. 802), A1.

Kennedy, Edward. 1998. On The Contents And Significance Of The Khāqānī Zīj By Jamshīd Ghiyāth Al-Dīn Al-Kāshī.. Islamic Mathematics And Astronomy. Frankfurt am Main: Institute for the History of Arabic-Islamic Science at the Johann Wolfgang Goethe University.
King, David. 1986. A Survey Of The Scientific Manuscripts In The Egyptian National Library. Winona Lake, IN: Eisenbrauns; The American Research Center in Egypt.

P. 157 (G48), 2.1.20.

Kennedy, Edward. 1956. “A Survey Of Islamic Astronomical Tables”. Transactions Of The American Philosophical Society 46, pt. 2: 121-177.

Pp. 127-8 (no. 20).

Kennedy, Edward. “Treatise V Of Kāshī's Khāqānī Zīj: The Determination Of The Ascendant”. Zeitschrift Für Geschichte Der Arabisch-Islamischen Wissenschaften 10: 123-146.