Direct Gravitational Perturbation

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

The direct gravitational acceleration of a third body (e.g., the Sun) on a spacecraft. In the Earth-Moon libration point navigation dynamics model, the difference between the Sun's gravitational acceleration on the spacecraft and its gravitational acceleration on the Earth-Moon barycenter constitutes the direct solar gravitational perturbation term.

Application Value

直接引力是第三体对航天器的直接引力加速度，是三体系统中主要的摄动源之一，轨道设计师计算轨道时必须考虑直接引力摄动。

References

  • 钱霙婧等, 2013, 宇航学报
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Contributors: ouyangjiahong, Ou Yang Jiahong