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I am taking the risk to submit this answer. Not because I have working experience or attended graduate courses on astrodynamics, or the like. It is rather because the question arouse my curiosity and I have discovered beautiful concepts/technologies, by reading various bibliographic resources recommended by the answerers. It is perhaps also because, to my ...


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Most of the questions about collinear orbit stability and stationkeeping and etc can be answered by several papers written by Robert Farquhar on his method of stationkeeping for the 1978 ISEE-3 mission. Search for this topic with his name. His papers are not overly technical, and most anyone with a decent math background can read them for content. ISEE-3 ...


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Periodic orbits about the 3 collinear points in the circular-restricted 3-body problem are Liapunov and orbitally unstable. These collinear points are labelled L1, L2, L3. Each is an unstable equilibrium point in the CR3BP. A spacecraft inserted into any periodic orbit about any of the collinear points will require some real stationkeeping to maintain its ...


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