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Yaʿqūb ibn Ṭāriq was an 8th century Persian[1] astronomer and mathematician. Yaʿqūb lived in Baghdad, and is considered to be one of the greatest astronomers of his time. In 767AD, at the court of al-Mansur, he probably met the Hindu Kankah (or Mankah?), who had brought there the Siddhanta. He wrote memoirs on the sphere (c. 777), on the division of the kardaja; and a zij, or collection of astronomical tables, derived from the Siddhanta, entitled Az-Zīj al-Mahlul min as-Sindhind li-Darajat Daraja.[2] .
He died in 796AD.
- ^ History of Islamic Science 1
- ^ E. S. Kennedy, A Survey of Islamic Astronomical Tables, (Transactions of the American Philosophical Society, New Series, 46, 2), Philadelphia, 1956, p. 12 (zij no. 71).
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