KMS National Astronomical Observatories, CAS
| The orbit of Triton with new precise observations and the INPOP19a ephemeris | |
| Tang, K.1; Song, Y. Z.1; Shen, K. X.2; Qiao, R. C.2; Tang, Z. H.1,3; Yu, Y.1,3; Zhang, H. Y.4; Yan, D.5 | |
| 2020-09-16 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
 |
| ISSN | 0004-6361 |
| Volume | 641Pages:7 |
| Abstract | Aims. The Gaia catalogue brings new opportunities and challenges to high-precision astronomy and astrometry. The precision of data reduction is therefore improved by a large number of reference stars with high-precision positions and proper motions. Numerous precise positions for Triton are obtained from the latest observations using the Gaia catalogue. Furthermore, the new INPOP19a planetary ephemeris, which also fits the observations from the Gaia Data Release 2, has recently become available. In this paper, a new orbit of Triton is calculated using the latest precise charge-coupled device (CCD) observations and the INPOP19a ephemeris.Methods. Triton's orbital solution is calculated using a numerical integrator, while the orientation of Neptune's pole in particular is obtained by integrating the simplified Euler's equations of motion. We determine the orbit of Triton over 170 yr based on 11 040 Earth-based observations made between 1847 and 2016 and on Voyager 2 data. The positions of the Sun and planets are provided by the INPOP19a ephemeris. We compare our results to those from other previous works to check the influences on Triton's orbit from different planetary ephemerides.Results. A new orbit of Triton is provided here. The root-mean-square of the residuals for the Earth-based CCD absolute observations are 0.102 '' in right ascension and 0.142 '' in declination. Although most different planetary ephemerides have large differences in Neptune's position, the orbits of Triton using different planetary ephemerides are still close, under similar dynamical models. The Voyager 2 data add a constraint on Triton's orbit here. |
| Keyword | astrometry celestial mechanics ephemerides planets and satellites: individual: Neptune planets and satellites: individual: Triton |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission |
| DOI | 10.1051/0004-6361/202038556 |
| WOS Keyword | ASTROMETRIC OBSERVATIONS ; OUTER PLANETS ; FASTT OBSERVATIONS ; CCD POSITIONS ; SATELLITES ; NEREID ; MOTION ; POLE |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[11803019] ; National Natural Science Foundation of China[11703007] ; Scientific research project of Shanghai Science and Technology Commission[19DZ1100500] |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Scientific research project of Shanghai Science and Technology Commission ; Scientific research project of Shanghai Science and Technology Commission |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000573867400001 |
| Publisher | EDP SCIENCES S A |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/81639 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Tang, K. |
| Affiliation | 1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, 3 East Shuyuan Rd, Lintong 710600, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Shanghai Univ Engn Sci, Sch Fundamental Studies, 333 Long Teng Rd, Shanghai 201620, Peoples R China 5.Huanggang Normal Univ, Sch Phys & Elect Informat, 146 Xingang Second Rd, Huanggang 438000, Hubei, Peoples R China |
| Recommended Citation GB/T 7714 | Tang, K.,Song, Y. Z.,Shen, K. X.,et al. The orbit of Triton with new precise observations and the INPOP19a ephemeris[J]. ASTRONOMY & ASTROPHYSICS,2020,641:7. |
| APA | Tang, K..,Song, Y. Z..,Shen, K. X..,Qiao, R. C..,Tang, Z. H..,...&Yan, D..(2020).The orbit of Triton with new precise observations and the INPOP19a ephemeris.ASTRONOMY & ASTROPHYSICS,641,7. |
| MLA | Tang, K.,et al."The orbit of Triton with new precise observations and the INPOP19a ephemeris".ASTRONOMY & ASTROPHYSICS 641(2020):7. |
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