Earth Non-Spherical Gravity Perturbation
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
Additional gravitational acceleration due to Earth's non-uniform mass distribution, dominated by the J2 term (oblateness). In high-precision Earth-Moon transfer models, this perturbation is combined with N-body gravity, lunar non-spherical perturbation, solar radiation pressure, and atmospheric drag. For long-duration transfers, it produces noticeable cumulative effects on trajectory accuracy.
Application Value
This concept is applicable in cislunar space mission design, orbit optimization, and trajectory planning for spacecraft transfers and maneuver strategies.
Related Concepts
References
- 彭祺擘和张海联 - 2016 - 载人登月地月转移轨道方案综述