Abstract
ABSTRACT This work introduces a new set of orbital elements to fully represent the zonal harmonics problem around an oblate celestial body. This new set of orbital elements allows to obtain a linear system for the unperturbed problem and, in addition, a completely polynomial system when considering the perturbation produced by the zonal harmonics from the gravitational force of an oblate celestial body. These orbital elements present no singularities and are able to represent any kind of orbit, including elliptic, parabolic, and hyperbolic orbits. Moreover, an application to this formulation of the Poincaré–Lindstedt perturbation method is included to obtain an approximate first-order solution of the problem for the case of the J2 perturbation, showing the performance of the methodology for different kinds of orbits.
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