Orbital Element Drift

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

The slow, continuous change of orbital elements (RAAN, inclination, eccentricity, etc.) over time due to perturbing forces such as non-spherical gravity fields. In circumlunar orbits, lunar higher-order gravitational harmonics and Earth's third-body perturbation are the primary drivers.

Application Value

[Translation needed for: 轨道力学是地月空间任务设计的基础，精确的轨道计算和分析能力直接决定任务能否成功实施。...]

Related Concepts

• Lyapunov Stability
• Adams-Cowell Integrator
• Hansen Coefficients
• Control Curve, U_i

References

• 陈天冀 等 - 2023 - 考虑环月交会约束的地月转移轨道设计