This book focuses on the navigation and tracking of artificial space objects, with emphasis on modelling the dynamics in a wide range of space missions, including earth-orbiting satellite missions, launch and re-entry missions as well as interplanetary missions. The book guides you in designing suitable estimation algorithms for each type of mission. It also helps you in addressing non-linearity in designing navigation algorithms for space missions and walks you through the process for choosing estimators for navigation and tracking of space vehicles. Includes MATLAB/Simulink based software is provided for simulation and simulated data set.