Abstract

The paper presents the results of a study of the dynamic structure of near-Earth orbital space in the 1 : 2 resonance region with Earth’s rotation speed. The results of an extensive numerical-analytical experiment to study the orbital evolution of objects moving in the semimajor axis range from 26 550 to 26 570 km, with inclinations from 0° to 180°. In this region, the zones of action of the five components of the orbital resonance and aspidal–nodal secular resonances of low orders are revealed. The distribution maps of the revealed resonances are constructed. The dynamic structure of the orbital space was also investigated using the fast Lyapunov characteristic of MEGNO and represented by a MEGNO map of the region in the section by the plane (inclination of the orbit, major axis). It is shown that a feature of the dynamic evolution of most of the studied orbits is randomness arising under the influence of overlapping resonances of various types.

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