Qādī Zāda al-Rūmī

Mathematician, Author

1364 – 1436

Who was Qādī Zāda al-Rūmī?

Qāḍī Zāda al-Rūmī, whose actual name was Salah al-Din Musa Pasha, was a Turkish astronomer and mathematician who worked at the observatory in Samarkand. He computed sin 1° to an accuracy of 10−12.

Together with Ulugh Beg, al-Kāshī and a few other astronomers Qāḍī Zāda produced the Zij-i-Sultani, the first comprehensive stellar catalogue since the Maragheh observatory's Zij-i Ilkhani two centuries earlier. The Zij-i Sultani contained the positions of 992 stars.

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Born
1364
Bursa
Also known as
  • Qazi Zadeh
Parents
  • Mehmet Çelebi
Nationality
  • Ottoman Empire
Profession
Died
1436
Samarkand