Abstract
We used binary octahedrons to investigate the dynamical behaviors of binary asteroid systems. The mutual potential of the binary polyhedron method is derived from the fourth order to the sixth order. The irregular shapes, relative orbits, attitude angles, as well as the angular velocities of the binary asteroid system are included in the model. We investigated the relative trajectory of the secondary relative to the primary, the total angular momentum and total energy of the system, the three-axis attitude angular velocity of the binary system, as well as the angular momentum of the two components. The relative errors of the total angular momentum and the total energy indicate that the calculation has a high precision. It is found that the influence of the orbital and attitude motion of the primary from the gravitational force of the secondary is obvious. This study is useful in understanding the complicated dynamical behaviors of the binary asteroid systems discovered in our Solar system.
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Acknowledgements
This project is funded by China Postdoctoral Science Foundation – General Program (No. 2017M610875), China Postdoctoral Science Foundation – Special Funding (No. 2018T110092) and the National Natural Science Foundation of China (No. 11772356).
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Jiang, Y., Baoyin, H. & Yang, M. Dynamical model of binary asteroid systems using binary octahedrons. J Astrophys Astron 39, 54 (2018). https://doi.org/10.1007/s12036-018-9537-2
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DOI: https://doi.org/10.1007/s12036-018-9537-2