Keplerian Motion Orbital parameters The movement of mass m2 relative to m, is defined by the homogeneous 2nd order differential equation G(m1+m2) y=0 Principles of the Global Positioning System Artificial Earth Satellite. Points Mass: negligible W=GMa=3980005103m3s2 The analytical solution of differential equation leads to the well-known Keplerian motion defined by six orbital parameters The orbital parameters correspond to the six integration constants of the second-order vector equation Principles of the Global Positioning System 2005-3-11(10 55 Principles of the Global Positioning System 2005-3-11 9 Keplerian Motion Principles of the Global Positioning System 2005-3-11 10 Artificial Earth Satellite: