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The focus of this paper is on inclination-only dependent lunisolarresonances, which shape the dynamics of a MEO (Medium Earth Orbit) object oversecular time scales (i.e. several decades). Following the formalism ofarXiv:2107.14507, we discuss an analytical model yielding the correct form ofthe separatrices of each one of the major lunisolar resonances in the "action"space $(i, e)$ (inclination, eccentricity) for any given semi-major axis $a$.We then highlight how our method is able to predict and explain the mainstructures found numerically in Fast Lyapunov Indicator (FLI) cartography. Wefocus on explaining the dependence of the FLI maps from the initial phase ofthe argument of perigee $\omega$ and of the longitude of the ascending node$\Omega$ of the object and of the moon $\Omega_L$. In addition, on the basis ofour model, we discuss the role played by the $\Omega-\Omega_L$ and the $2\Omega-\Omega_L$ resonances, which overlap with the inclination-only dependentones as they sweep the region for increasing values of $a$, generating largedomains of chaotic motion. Our results provide a framework useful in designinglow-cost satellite deployment or space debris mitigation strategies, exploitingthe natural dynamics of lunisolar resonances that increase an object'seccentricity up until it reaches a domain where friction leads to atmosphericre-entry.

A detailed dynamical model for inclination-only dependent lunisolar resonances. Effect on the "eccentricity growth" mechanism