Ibn Younis

(Abu'l-Hasan `Ali ibn Abi Sa` id `Ard al-Rahman ibn Ahmad ibn Yunis Al-Sadaf)
(979 - 31.05.1008;
on others. data about. 950, Egypt - 1009, Fustat, Egypt)
The son of a famous historian. He worked in Cairo at the court of Fatimid caliph al-`Aziz and al-Hakim, was the organizer and leader of an astronomical observatory. I.YU. - Author of "Big Khakimov Zij (this work includes the principles of the horoscope, the calculation of directorates etc.. astrological operations), "The Book of achieving desired that is associated with the ascent of Sirius, etc..

I.YU. determined that he would die in seven days, when he was perfectly healthy. He finished all his affairs, locked himself in his house and spent a few days, reading the verses of the Koran until he died in accurately predict the date he.

In honor of I.YU. lunar crater named Ibn Yunus.

Literature:
1. Matvievskaya G., Rosenfeld B. Mathematicians and astronomers of the Muslim Middle Ages and their works (VIII-XVII centuries)..
2. Kolchinsky I., Korsun AA, Rodriguez M. Astronomers.
3. Poggendorff JC. Biographisch-literarisches Handwoerterbuch zur geschichte der exacten Wissenschaften ...