TY - JOUR
T1 - Accelerating binary asteroid system propagation via nested interpolation method
AU - Lu, Jucheng
AU - Shang, Haibin
AU - Wei, Bingwei
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature B.V.
PY - 2023/4
Y1 - 2023/4
N2 - The binary asteroid system has become a topic of great interest from planetary science to planetary defense. A desire to understand the dynamics of binary asteroid systems during their formation and evolution motivates the study of the propagation of binary asteroid systems. The gravitational mutual potential, force, and torque, which are the three key elements for the propagation of binary asteroid system, are modeled by a hybrid gravity model of the primary and a finite element model of the secondary, resulting in a nested interpolation method. This method achieves a significant computational speedup compared with the pure finite element method benefited from the employing of the hybrid gravity model of the primary and the removal of a large number of element pairs. Benchmarking tests are performed to confirm the accuracy and efficiency of the proposed method. The dynamics of the binary asteroid system Moshup-Squannit have been investigated through comparisons of the propagation of the mutual orbit between different internal structures of the primary. The simulation results show that there is a reduction in the spin–orbit coupling of the system as the mass of the primary becomes more concentrated toward its barycenter.
AB - The binary asteroid system has become a topic of great interest from planetary science to planetary defense. A desire to understand the dynamics of binary asteroid systems during their formation and evolution motivates the study of the propagation of binary asteroid systems. The gravitational mutual potential, force, and torque, which are the three key elements for the propagation of binary asteroid system, are modeled by a hybrid gravity model of the primary and a finite element model of the secondary, resulting in a nested interpolation method. This method achieves a significant computational speedup compared with the pure finite element method benefited from the employing of the hybrid gravity model of the primary and the removal of a large number of element pairs. Benchmarking tests are performed to confirm the accuracy and efficiency of the proposed method. The dynamics of the binary asteroid system Moshup-Squannit have been investigated through comparisons of the propagation of the mutual orbit between different internal structures of the primary. The simulation results show that there is a reduction in the spin–orbit coupling of the system as the mass of the primary becomes more concentrated toward its barycenter.
KW - Binary asteroid system
KW - Finite element
KW - Full two-body problem
KW - Gravitational interactions
UR - http://www.scopus.com/inward/record.url?scp=85149297704&partnerID=8YFLogxK
U2 - 10.1007/s10569-023-10123-w
DO - 10.1007/s10569-023-10123-w
M3 - Article
AN - SCOPUS:85149297704
SN - 0923-2958
VL - 135
JO - Celestial Mechanics and Dynamical Astronomy
JF - Celestial Mechanics and Dynamical Astronomy
IS - 2
M1 - 9
ER -