A cartographic study of spin-orbit coupling in binary asteroids. Issue Volume 15:Issue S364(2019) (October 2021)

• Record Type: Journal Article
• Authors: Nadoushan, Mahdi Jafari
• Editors: Celletti, Alessandra; Galeş, Cătălin; Beaugé, Cristian; Lemaître, Anne
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S364(2019)
• Page Start: 158
• Page End: 164
• Publication Date: 2021-10
• Subjects: celestial mechanics -- methods: numerical -- minor planets -- asteroids; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921321001344
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: 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.