In a small book, the author set a goal - to provide the necessary information on celestial mechanics for persons. not having a special astronomical education , but forced by the nature of their activities to be interested in the calculation of the movement of artificial celestial bodies (missiles) Artificial Satellites , Space ships and t. d. ). The author skillfully draws the attention of readers to the most basic questions of astronomy and celestial mechanics, especially important for the study of the movement of artificial celestial bodies. The book will be an excellent guide for mathematicians, physicists, computer scientists, programmers, engineering and design workers interested in the issues of celestial mechanics, and can serve as a good reference.