Re-reduction of CCD astrometric observations of Neptunian satellites in 2006-2007 based on Gaia DR2 and comparison with ephemerides

doi:10.1016/j.pss.2018.10.007

	Re-reduction of CCD astrometric observations of Neptunian satellites in 2006-2007 based on Gaia DR2 and comparison with ephemerides
	Yu, Y.1,2; Cheng, X.3; Qiao, R. C.3; Yan, D.4; Luo, H.1; Tang, K.1
刊名	PLANETARY AND SPACE SCIENCE
	2019
卷号	165 页码:205-209
关键词	Astrometry Planets and satellites: general Methods: observational
ISSN号	0032-0633
DOI	10.1016/j.pss.2018.10.007
英文摘要	Based on the newly released Gaia DR2 star catalogue, the CCD images of Neptunian satellites taken by the telescopes at Xinglong Observatory of National Astronomical Observatory in 2006-2007 were re-reduced. A total of 174 satellite positions were derived, including 34 new observed positions of Triton, 28 new and 112 updated observed positions of Nereid. Thanks to the high-quality reference catalogue Gaia DR2 and more suitable plate models, the precision of the re-reduction for Nereid is more than doubled and the dispersions of these observations are better than 80 mas. Moreover, the comparisons show that for the Neptune system in the period 2006-2007, there are some systematic discrepancies between different planetary ephemerides such as INPOP17a with DE431 and EPM2017, and the discrepancy can reach as much as 50 mas, which is reflected in the calculation of (O-C) residuals of Neptunian satellites.
资助项目	Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Science Foundation of China[11573029] ; National Science Foundation of China[U1431227] ; National Science Foundation of China[11703007]
WOS关键词	NEREID ; TRITON
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000468702500017
资助机构	Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/11916]
专题	中国科学院国家授时中心
通讯作者	Yu, Y.
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Time Serv Ctr, Lintong 710600, Shaanxi, Peoples R China 4.Huanggang Normal Univ, Sch Elect Informat, Huanggang 438000, Peoples R China
推荐引用方式 GB/T 7714	Yu, Y.,Cheng, X.,Qiao, R. C.,et al. Re-reduction of CCD astrometric observations of Neptunian satellites in 2006-2007 based on Gaia DR2 and comparison with ephemerides[J]. PLANETARY AND SPACE SCIENCE,2019,165:205-209.
APA	Yu, Y.,Cheng, X.,Qiao, R. C.,Yan, D.,Luo, H.,&Tang, K..(2019).Re-reduction of CCD astrometric observations of Neptunian satellites in 2006-2007 based on Gaia DR2 and comparison with ephemerides.PLANETARY AND SPACE SCIENCE,165,205-209.
MLA	Yu, Y.,et al."Re-reduction of CCD astrometric observations of Neptunian satellites in 2006-2007 based on Gaia DR2 and comparison with ephemerides".PLANETARY AND SPACE SCIENCE 165(2019):205-209.