Astrometric Observations of NEA 1998 HH49 Using the Daocheng 50 cm Telescope | |
Xu H(徐欢)7,8; Cheng XM(程向明)5,6,7,8; Zhang, Yi-Gong4; Song TF(宋腾飞)8; Zhang, Zhen-Jun3; Peng, Qing-Yu1,2 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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2024-07-01 | |
卷号 | 24期号:7 |
关键词 | astrometry ephemerides time |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/ad50b8 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | This study details an astrometric observation campaign of the Near-Earth Asteroid 1998 HH49, conducted with the aim of refining our understanding of its physical characteristics. Utilizing the 50 cm telescope located at the Wumingshan Mountain in Daocheng, Sichuan, images were obtained over four nights, from 2023 October 19 to October 22. These observations were processed using Astrometrica software, facilitating the precise determination of the asteroid's position. The observational results were compared with the ephemerides from three distinct sources to verify accuracy: the Jet Propulsion Laboratory (JPL) Horizons System, the Institut de M & eacute;canique C & eacute;leste et de Calcul des & Eacute;ph & eacute;m & eacute;rides (IMCCE) Miriade, and the Near-Earth Objects Dynamic Site (NEODyS-2). When compared with the JPL ephemeris, a mean observed-minus-calculated (O-C) result of 0.'' 07 in the R.A. direction and -0.'' 35 in the decl. direction was yielded. Furthermore, the comparison with the IMCCE ephemeris yielded mean O-C results of 0.'' 08 in the R.A. direction and -0.'' 06 in the decl. direction. The comparison with the NEODyS-2 ephemeris yielded the mean O-C results of 0.'' 06 in R.A. and -0.'' 49 in decl. direction. The study's findings demonstrate a general consistency between the observed data and the ephemeris predictions, with minor discrepancies observed across the data sets. Notably, both the JPL and NEODyS-2 ephemerides show that the residuals in the decl. direction exceed those in the R.A. direction. The disparities may result from atmospheric differential color refraction, ephemeris discrepancies, observational errors, and other factors. Additionally, it is worth noting that further investigation is required due to the potential influence of additional factors. Overall, the Daocheng 50 cm Telescope exhibits the ability to conduct high-precision positional measurements. |
学科主题 | 天文学 ; 天体测量学 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA |
资助项目 | National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China (NSFC)[12173085] ; West Light Foundation of The Chinese Academy of Sciences Key scientific research projects of colleges and universities in Henan Province[23B16001] |
WOS关键词 | COLOR |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:001264282800001 |
资助机构 | National Key R&D Program of China[2022YFE0116800] ; National Natural Science Foundation of China (NSFC)[12173085] ; West Light Foundation of The Chinese Academy of Sciences Key scientific research projects of colleges and universities in Henan Province[23B16001] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/27459] ![]() |
专题 | 云南天文台_射电天文研究组 |
通讯作者 | Cheng XM(程向明) |
作者单位 | 1.Sino-French Joint Laboratory for Astrometry, Dynamics and Space Science, Jinan University, Guangzhou 510632, China 2.Department of Computer Science, Jinan University, Guangzhou 510632, China; 3.School of Computer Science and Information Engineering, Anyang Institute of Technology, Anyang 455000, China; 4.School of Information Engineering, Kunming University, Kunming 650214, China; 5.Engineering Laboratory on Applied Astronomical Technology of Yunnan, Kunming 650216, China; 6.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 7.University of Chinese Academy of Sciences, Beijing 100049, China; 8.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; cxm@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Xu H,Cheng XM,Zhang, Yi-Gong,et al. Astrometric Observations of NEA 1998 HH49 Using the Daocheng 50 cm Telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(7). |
APA | Xu H,Cheng XM,Zhang, Yi-Gong,Song TF,Zhang, Zhen-Jun,&Peng, Qing-Yu.(2024).Astrometric Observations of NEA 1998 HH49 Using the Daocheng 50 cm Telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(7). |
MLA | Xu H,et al."Astrometric Observations of NEA 1998 HH49 Using the Daocheng 50 cm Telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.7(2024). |
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