Mutual occultations between Galilean satellites observed at Yunnan Observatory in 2009

doi:10.1051/0004-6361/201016339

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	Mutual occultations between Galilean satellites observed at Yunnan Observatory in 2009
	Zhang XL(张西亮)1,2,3 ; Arlot, JE 3; Liu Z(刘忠)1 ; Zhang, XL (reprint author), Chinese Acad Sci, Joint Lab Opt Astron, Yunnan Observ, Natl Astron Observ, Kunming, Peoples R China.
发表期刊	ASTRONOMY & ASTROPHYSICS
	2011-08
卷号	532
DOI	10.1051/0004-6361/201016339
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Techniques: Photometric Occultations Planets And Satellites: Dynamical Evolution And Stability Celestial Mechanics
摘要	Context. Photometry of mutual events between natural satellites has been shown to be a most effective and accurate ground-based method for obtaining accurate astrometric data by fitting the light curves observed during these events, and is invaluable for developing the orbital models of the natural satellites. Aims. Mutual occultations of J2 Europa by J1 Io (Aug. 28, 2009), J1 Io by J2 Europa (Nov. 9 and Dec. 11, 2009), and J1 Io by J3 Ganymede (Nov. 28, 2009) were observed at Yunnan Observatory during the PHEMU09 international campaign. We calculate the astrometric data of satellites by analyzing and fitting the light curves that we derived. Methods. The model proposed by Emelianov (2003, Sol. Syst. Res., 37, 314) was used to fit the light curves, while taking the Lommel-Seeliger scattering law into account. Results. For each event, we derive dynamical quantities such as the deviation of the observed relative satellite motion from the theoretical motion provided by the relevant ephemeris denoted as D(x) and D(y), and the impact parameter and its corresponding mid-time. These results have an accuracy of between about several mas and 90 mas for D(x) and D(y), and 0.31-2.97 s for the mid-time. The residuals of the longitude shifts (delta l(1) for J1 Io and delta l(2) for J2 Europa) that represent the shifts of the mid-times of the events, are also calculated to be around 10 km with the most accurate available ephemerides.
项目资助者	MOST, China [2011CB811400] ; Chinese Academy of Science
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
归档日期	2012-04-12
WOS记录号	WOS:000293283600047
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	EVENTS ; JUPITER ; PHOTOMETRY ; IO
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5405
专题	南方基地
通讯作者	Zhang, XL (reprint author), Chinese Acad Sci, Joint Lab Opt Astron, Yunnan Observ, Natl Astron Observ, Kunming, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Joint Laboratory for Optical Astronomy, Chinese Academy of Sciences, Kunming, PR China 2.Graduate School of Chinese Academy of Sciences, Beijing 100039, PR China 3.Institut de mecanique celeste et de calcul des ephemerides, Observatoire de Paris, UMR 8028 du CNRS, 77 avenue Denfert-Rochereau, 75014 Paris, France
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	Zhang XL,Arlot, JE,Liu Z,et al. Mutual occultations between Galilean satellites observed at Yunnan Observatory in 2009[J]. ASTRONOMY & ASTROPHYSICS,2011,532.
APA	Zhang XL,Arlot, JE,Liu Z,&Zhang, XL .(2011).Mutual occultations between Galilean satellites observed at Yunnan Observatory in 2009.ASTRONOMY & ASTROPHYSICS,532.
MLA	Zhang XL,et al."Mutual occultations between Galilean satellites observed at Yunnan Observatory in 2009".ASTRONOMY & ASTROPHYSICS 532(2011).

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