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A cartographic study of spin-orbit coupling in binary asteroids

Published online by Cambridge University Press:  30 May 2022

Mahdi Jafari Nadoushan*
Affiliation:
K. N. Toosi University of Technology, Tehran, Iran
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Abstract

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In the spin-orbit resonances, we assume that the orbit of the secondary asteroid around the primary is invariant, which is a reasonable assumption at first glance. Owing to the irregularity of asteroids’ geometry and their effect on the mutual orbit, this assumption should be revised. Therefore, we focus on a binary asteroid with a spherical primary and a secondary with an irregular shape. When the shape of a secondary asteroid is not a sphere, the gravitational interaction is important, and we should consider the interaction of orbit and spin. We generate fast Lyapunov indicator (FLI) maps for both spin-orbit resonance and spin-orbit coupling problems and investigate the effect of orbit alternation on the structure of phase space.

Type
Research Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of International Astronomical Union

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