A Novel Ephemeris Model for Martian Moons Incorporating Their Free Rotation

doi:10.1088/1674-4527/ad86a8

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	A Novel Ephemeris Model for Martian Moons Incorporating Their Free Rotation
	Yang YZ(杨永章)1 ; Huang K(黄凯)1,2; Yan, Jian-Guo 3; Li YQ(李语强)1
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2024-11-01
卷号	24 期号:11
DOI	10.1088/1674-4527/ad86a8
产权排序	第1完成单位
收录类别	SCI
关键词	planets and satellites: dynamical evolution and stability methods: numerical celestial mechanics astrometry
摘要	High-precision ephemerides not only support space missions, but can also be used to study the origin and future of celestial bodies. In this paper, a coupled orbit-rotation dynamics model that fully takes into account the rotation of the Martian moons is developed. Phobos and Deimos' rotations are first described by Eulerian rotational equations, and integrated simultaneously with the orbital motion equations. Orbital and orientational parameters of Mars satellites were simultaneously obtained by numerical integration for the first time. In order to compare the differences between our newly developed model and the one now used in the ephemerides, we first reproduced and simulated the current model using our own parameters, and then fit it to the Institut de M & eacute;canique C & eacute;leste et de Calcul des & Eacute;ph & eacute;m & eacute;rides ephemerides using least-square procedures. The adjustment test simulations show Phobos and Deimos' orbital differences between the refined model and the current model are no more than 300 m and 125 m, respectively. The orientation parameters are confirmed and the results are in good agreement with the International Astronomical Union results. Moreover, we simulated two perturbations (main asteroids and mutual torques) which were not included in our refined model, and find that their effects on the orbits are completely negligible. As for the effect on rotation, we propose to take care of the role of mutual attraction in future models.
资助项目	National Key Research and Development Program of China[2021YFA0715101]; National Natural Science Foundation of China (NSFC)[12033009]; National Natural Science Foundation of China (NSFC)[12103087]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA0350300]; International Partnership Program of Chinese Academy of Sciences[020GJHZ2022034FN]; Yunnan Fundamental Research Projects[202201AU070225]; Yunnan Fundamental Research Projects[202301AT070328]; Yunnan Fundamental Research Projects[202401AT070141]; Young Talent Project of Yunnan Revitalization Talent Support Program
项目资助者	National Key Research and Development Program of China[2021YFA0715101] ; National Natural Science Foundation of China (NSFC)[12033009, 12103087] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA0350300] ; International Partnership Program of Chinese Academy of Sciences[020GJHZ2022034FN] ; Yunnan Fundamental Research Projects[202201AU070225, 202301AT070328, 202401AT070141] ; Young Talent Project of Yunnan Revitalization Talent Support Program
语种	英语
学科领域	天文学 ; 天体测量学
文章类型	Article
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:001353791400001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	GRAVITATIONAL-FIELD ; ORBITS ; SATELLITES ; MOTION ; MARS ; SPACECRAFT ; LIBRATION ; PHOBOS ; MASSES
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27683
专题	应用天文研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; [email protected], [email protected]; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430070, China; [email protected]
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yang YZ,Huang K,Yan, Jian-Guo,et al. A Novel Ephemeris Model for Martian Moons Incorporating Their Free Rotation[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(11).
APA	杨永章,黄凯,Yan, Jian-Guo,&李语强.(2024).A Novel Ephemeris Model for Martian Moons Incorporating Their Free Rotation.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(11).
MLA	杨永章,et al."A Novel Ephemeris Model for Martian Moons Incorporating Their Free Rotation".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.11(2024).

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