Exploring Tidal Obliquity Variations with SMERCURY-T

Abstract We introduce our new code, SMERCURY-T , which is based on existing codes SMERCURY and Mercury-T . The result a mixed-variable symplectic N -body integrator that can compute the orbital spin evolution of planet within multiplanet system under influence tidal torques from its star. validate implementation by comparing experimental results to secular model. As we demonstrate in series experiments, allows for study spin–orbit resonance crossings captures planets complex systems. These processes drive planet’s state evolve along vastly different pathways road toward equilibrium, as dampen rate obliquity. Additionally, show scenario exemplifies crossing chaotic region exists overlap two resonances. test experiences violent swings obliquity until eventual escape it tidally evolves. All these are have been important over many bodies solar beyond implications planetary climate habitability. powerful versatile tool further phenomena.