Modern Astrodynamics

1

Perturbed Motion

DAVID A. VALLADO     Analytical Graphics Inc.

Contents

1.1. Basic definitions

1.2. Forces

1.3. Gravity

1.4. Drag

1.5. 3-Body

1.6. Solar radiation pressure

1.7. Tides

1.8. Albedo

1.9. Other

1.10. Propagating the orbit

1.11. Analytical

1.12. Numerical

1.13. Semianalytical

1.14. Variation of parameters

1.15. Lagrangian VOP—conservative forces

1.16. Gaussian VOP—nonconservative forces

1.17. Effect on orbits

1.18. J₂ Only

1.19. Comparative force model effects

1.20. Conclusions

References

1.1 Basic definitions

Perturbations are deviations from a normal, idealized, or undisturbed motion. The actual motion will vary from an ideal undisturbed path (two-body) due to perturbations caused by other bodies (such ...