Perihelion advance and trajectory of charged test particles in Reissner-Nordstrom field via the higher-order geodesic deviations

By using the higher-order geodesic deviation equations for charged particles, we apply the method described by Kerner this http URL. to calculate the perihelion advance and trajectory of charged test particles in the Riessner-Nordstrom spacetime. The effect of charge on the perihelion advance is studied and compared the results with those obtained earlier via the perturbation method. The advantage of this approximation method is to provide a way to calculate the perihelion advance and orbit of planets in the vicinity of massive and compact objects without considering Newtonian and post-Newtonian approximation.