Astrometric observations of Nereid in 2006-2007

被引:11
作者
Qiao, R. C. [1 ,2 ]
Cheng, X. [1 ,3 ]
Shen, K. X. [1 ]
Dourneau, G. [4 ]
Wang, S. H. [5 ]
Hu, X. Y. [3 ,5 ]
Tang, Z. H. [2 ,5 ]
Xi, X. J. [1 ]
机构
[1] Chinese Acad Sci, NTSC, Lintong 710600, Shaanxi, Peoples R China
[2] Chinese Acad Sci, United Lab Opt Astron, Beijing 100864, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[4] Univ Bordeaux, OASU, LAB, CNRS,UMR 5804, F-33270 Floirac, France
[5] Chinese Acad Sci, SHAO, Shanghai 200030, Peoples R China
基金
美国国家科学基金会;
关键词
astrometry; planets and satellites: general;
D O I
10.1111/j.1365-2966.2008.13982.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, we present 112 new CCD astrometric positions of Nereid, the second and faint satellite of Neptune (m(v) similar or equal to 19). We observed this small satellite in the 2006-2007 period with the 1 and 2.16-m telescopes of Xinglong Station near Beijing, both equipped with large CCD detectors of 1340 x 1300 and 2080 x 2048 pixels, respectively. The high density and highly accurate star catalogue UCAC2 was used in the reduction so that a classical astrometric calibration method was applied. We have shown that our observations of Nereid appear to be of equal or higher precision (sigma similar or equal to 0.2 arcsec) than most of the recent CCD ones.
引用
收藏
页码:1791 / 1795
页数:5
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