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

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.
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.

İhsanoğlu, Ekmeleddin, and Boris Rozenfeld. 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.

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.