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Planetary Satellite Orbiters: Applications for the Moon

机译:行星卫星轨道器:月球的应用

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摘要

Low-altitude, near-polar orbits are very desirable as science orbits for missions to planetary satellites, such as the Earth's Moon. In this paper, we present an analytical theory with numerical simulations to study the orbital motion of lunar low-altitude artificial satellite. We consider the problem of an artificial satellite perturbed by the nonuniform distribution of the mass of the Moon (J_2-J_5, J_7, and C_(22)). The conditions to get frozen orbits are presented. Using an approach that considers the single-averaged problem, we found families of periodic orbits for the problem of an orbiter travelling around the Moon, where frozen orbits valid for long periods of time are found. A comparison between the models for the zonal and tesseral harmonics coefficients is presented.
机译:低空近极轨道是非常理想的科学轨道,可用于对诸如月球之类的行星卫星的飞行任务。在本文中,我们提出了一种具有数值模拟的分析理论,以研究月球低空人造卫星的轨道运动。我们考虑了人造卫星受月球质量的不均匀分布(J_2-J_5,J_7和C_(22))扰动的问题。介绍了获得冻结轨道的条件。使用一种考虑了单平均问题的方法,我们发现了绕月球绕月轨道运行的问题的周期轨道族,在那里发现了长时间有效的冻结轨道。给出了区域和地基谐波系数模型之间的比较。

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