With the deepening of human scientific research and the continuous expansion of activity space, the number of natural and artificial celestial bodies that need to be tracked, measured and determined has increased dramatically. However, a large number of astronomical observations and massive information brought by spacecraft tracking have produced problems that classical algorithms cannot solve, and new theories are urgently needed to support the development of orbit determination theory.

This book was produced under such a background. The book was first published by Cambridge University Press in 2009. The author AndreaMilani is a professor of mathematics in the Department of Mathematics at the University of Pisa. In-depth research has been carried out in many aspects, such as multi-body problem, spatial dynamics, orbit determination prediction and space collision early warning. The book is divided into four parts, 17. Aiming at the problem of precise orbit determination that traditional algorithms can't achieve in recent years, a series of new algorithms and models are systematically proposed.

At the same time, the book also lists a large number of practical examples of space exploration missions to help readers better understand the orbit determination model and method proposed in the book.