Mirzo Ulughbek’s “Zij-i Guragani” - a great achievement of Eastern science

Abstract

This article analyzes the scientific significance of the famous astronomical work Zij-i Guragani, created by the great astronomer Mirzo Ulughbek. The work presents important information about the star catalog compiled based on astronomical observations conducted at the Samarkand observatory, planetary motion, astronomical coordinates, and methods of time determination. In particular, the inclusion of precise coordinates of 1018 stars represents a major scientific achievement in medieval astronomy. The article highlights the astronomical tables and calculations of Zij-i Guragani, its scientific accuracy, and its influence on the development of later astronomy. It also examines the importance of this work as a valuable source for modern astronomical history and scientific research.