'Fitzpatrick presents a clear exposition of the main principles of celestial mechanics ... Each chapter ends with a number of well-thought-out problems with a nice range of difficulty from straightforward to quite challenging. The author designed the book for upper-level undergraduates and beginning graduate students who have completed courses in classical mechanics and multivariate vector calculus. Professionals from other branches of astronomy will also find this a handy review and reference ... Highly recommended.' R. R. Erickson, Choice