Nonspherical Gravitational Perturbation

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

Perturbation forces arising from the deviation of a body's gravitational field from a perfect sphere, described by spherical harmonic coefficients. For distant cislunar orbits, nonspherical perturbations from the Earth and Moon are negligible. They must be considered in low-orbit missions such as low lunar orbit.

Application Value

[Translation needed for: 摄动分析是理解真实轨道与理想轨道差异的关键，对于高精度轨道预报和任务设计必不可少。...]

References

  • Liu et al. 2024, A novel autonomous navigation constellation in the Earth–Moon system
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Contributors: ouyangjiahong, Ou Yang Jiahong