New Positions of Triton Based on Gaia DR2 and New Image-processing Methods
文献类型：期刊论文
| 作者 | Zhang, H. Y.1; Qiao, R. C.2; Yu, Y.3,4; Yan, D.5; Tang, K.3 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 161期号:5页码:8 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/abf121 |
| 英文摘要 | The large time span and precise observational data of natural satellites is of great significance for updating their ephemerides and studying their dynamic characteristics. With the help of the new image-processing methods and the Gaia DR2 catalog, all CCD images of Triton taken with the 1.56 m telescope of Shanghai Astronomical Observatory during 2005-2009 were reanalyzed. The median filtering algorithm is used for image preprocessing to remove the influence of the halo of Neptune, and an upgraded modified moment, called the intensity-square-weighted centroiding method, is applied to determine the centroids of the stars and Triton. A total of 2299 positions of Triton were obtained, including 263 new observed positions and 2036 updated observed positions. Such five-year time span data with high precision will be very helpful to improve the orbit parameters of Triton. |
| WOS关键词 | ASTROMETRIC OBSERVATIONS ; NEPTUNIAN SATELLITES ; REREDUCTION ; POLE |
| 资助项目 | National Science Foundation of China[11803019] ; National Science Foundation of China[12073062] ; National Science Foundation of China[11703007] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000645145200001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China |
| 源URL | [http://210.72.145.45/handle/361003/10727]  |
| 专题 | 中国科学院国家授时中心 |
| 通讯作者 | Zhang, H. Y. |
| 作者单位 | 1.Shanghai Univ Engn Sci, Sch Math Phys & Stat, 333 Long Teng Rd, Shanghai 201620, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, 3 East Shuyuan Rd, Lintong 710600, Shaanxi, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 5.Huanggang Normal Univ, Sch Phys & Elect Informat, 146 Xingang Second Rd, Huanggang 438000, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, H. Y.,Qiao, R. C.,Yu, Y.,et al. New Positions of Triton Based on Gaia DR2 and New Image-processing Methods[J]. ASTRONOMICAL JOURNAL,2021,161(5):8. |
| APA | Zhang, H. Y.,Qiao, R. C.,Yu, Y.,Yan, D.,&Tang, K..(2021).New Positions of Triton Based on Gaia DR2 and New Image-processing Methods.ASTRONOMICAL JOURNAL,161(5),8. |
| MLA | Zhang, H. Y.,et al."New Positions of Triton Based on Gaia DR2 and New Image-processing Methods".ASTRONOMICAL JOURNAL 161.5(2021):8. |
入库方式： OAI收割
来源：国家授时中心
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