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Application of Lagrange L1 Point and Halo Orbits in Sun-Earth(Moon) System

LI Yan-jun

Abstract

Lagrange L1 Point and Halo Orbits aound it in Sun-Earth(Moon) System play an important role in Kuafu project. Halo Orbits around L1 point can be used in continuous sun observation. This paper computes periodic Halo orbits around L1 point in circular-restricted three bodies problem,composed of Sun-Earth(Moon) -Probe,by means of numerical analytical method,and researchs the feature of these Halo orbits. The results are useful for target orbit design of Kuafu project.

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Key concepts: Lagrangian point, Halo orbit, Halo, Orbit (dynamics), Point (geometry), Physics, Astrobiology, Astronomy