New astrometric observations of Triton in 2007-2009

	New astrometric observations of Triton in 2007-2009
	Qiao, R. C.; Zhang, H. Y.; Dourneau, G.; Yu, Y.; Yan, D.; Shen, K. X.; Cheng, X.; Xi, X. J.; Hu, X. Y.; Wang, S. H.
	2014
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
卷号	440 期号:4 页码:3749-3756
摘要	Astrometric positions of the Neptunian satellite Triton with a visual magnitude of 13.5 were obtained during three successive oppositions in 2007, 2008 and 2009. A total of 1095 new observed positions of Triton were collected during 46 nights of observations, involving eight missions and three telescopes. We compared our observations to the best ephemerides of Triton available now. This comparison has shown that our observations present a high level of accuracy as they provide standard deviations of residuals hardly higher than 50 mas and mean residuals lower than 30 mas, corresponding to about only 500 km in the position of the very distant satellite Triton. Moreover, we have compared most of the different planetary ephemerides of Neptune available now as well as two recent orbit models of Triton. These new comparisons have clearly shown the differences between all of these ephemerides which can be significant and that are presented in this work.
部门归属	高精度时间传递与精密测量研究室
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/7369
专题	高精度时间传递与精密测定轨研究室
推荐引用方式 GB/T 7714	Qiao, R. C.,Zhang, H. Y.,Dourneau, G.,et al. New astrometric observations of Triton in 2007-2009[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,440(4):3749-3756.
APA	Qiao, R. C..,Zhang, H. Y..,Dourneau, G..,Yu, Y..,Yan, D..,...&Wang, S. H..(2014).New astrometric observations of Triton in 2007-2009.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,440(4),3749-3756.
MLA	Qiao, R. C.,et al."New astrometric observations of Triton in 2007-2009".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 440.4(2014):3749-3756.

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