Dep.Matematicas, Escuela Politecnica, Univ.Carlos III, Madrid, Spain
Dep.Astronomia y Geodesia, Fac.Matematicas, Univ.Complutense, Madrid, Spain
By means of a covariant description of motion in the solar system post-Newtonian field, a formulation of the observed general precession of a torque free located at distance far from the observer is derived in order to obtain a relativistic theory for the precession of the equinoxes.