Working models for the gravitational field of Phobos

查看全文 作　　者：SHI [1]Xian;WILLNER [2]Konrad;OBERST [2,3]Jürgen;PING [1]JinSong;YE [1]ShuHua

机构地区：[1]Shanghai Astronomical Observatory,Chinese Academy ofSciences,Shanghai 200030,China;[2]Departmentfor Geodesy and Geoinformation Science,Technical University Berlin,Berlin 10623,Germany;[3]Institute of Planetary Research,Planetary Geodesy,German Aerospace Center,Berlin 12489,Germany

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2012年第55卷第2期,共7页

基　　金：supported by the CAS-DAAD joint scholarship,the National Natural Science Foundation of China (Grant No.10973031);the National High Technology Research and Development Program of China (Grant No.2010AA122206);the Ministry of Education and Science of the Russian Federation (Grant NO.11.G34.31.0021) 摘　　要：Models for the gravitational field of Mars moon Phobos were developed using the latest shape model and assuming homogeneous density distribution.Three methods were applied in our study.Comparisons were made between these methods and all were shown to yield consistent results.Notably,the most accurate shape model of Phobos to date,complete up to degree and order 17 was used for the first time in our analysis.A set of spherical harmonic coefficients up to degree and order 17 were derived for the gravitational field of Phobos.Also considered was the gravitational field on the surface of Phobos.Typical characteristics as well as some pronounced surface features of this irregular-shaped small body could be conveniently identified.The results are readily applicable for such purposes as spacecraft orbit analysis and assessing the dynamical environment of Phobos. 关键词：引力场场模型形状模型表面特征均匀分布球谐系数典型特征轨道分析

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Working models for the gravitational field of Phobos

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