The astrometric Gaia-FUN-SSO observation campaign of 99942 Apophis
文献类型：期刊论文
| 作者 | W. Thuillot1; D. Bancelin1,2; A. Ivantsov1,28; J. Desmars1,4; M. Assafin3; S. Eggl1,2; D. Hestroffer1; P. Rocher1; B. Carry1; P. David1 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2015-11 |
| 卷号 | 583 |
| ISSN号 | 1432-0746 |
| 关键词 | astrometry minor planets, asteroids: individual: 99 942 Apophis ephemerides |
| 通讯作者 | Thuillot, W (reprint author), PSL Res Univ, Inst Mecan Celeste & Calcul Ephemerides, Univ Lille 1, Paris Observ,UPMC,UMR CNRS 8028, 77 Ave Denfert Rochereau, F-75014 Paris, France. |
| 产权排序 | 第二十三完成单位 |
| 英文摘要 | Aims. Astrometric observations performed by the Gaia Follow-Up Network for Solar System Objects (Gaia-FUN-SSO) play a key role in ensuring that moving objects first detected by ESA's Gaia mission remain recoverable after their discovery. An observation campaign on the potentially hazardous asteroid (99 942) Apophis was conducted during the asteroid's latest period of visibility, from 12/21/2012 to 5/2/2013, to test the coordination and evaluate the overall performance of the Gaia-FUN-SSO . Methods. The 2732 high quality astrometric observations acquired during the Gaia-FUN-SSO campaign were reduced with the Platform for Reduction of Astronomical Images Automatically (PRAIA), using the USNO CCD Astrograph Catalogue 4 (UCAC4) as a reference. The astrometric reduction process and the precision of the newly obtained measurements are discussed. We compare the residuals of astrometric observations that we obtained using this reduction process to data sets that were individually reduced by observers and accepted by the Minor Planet Center. Results. We obtained 2103 previously unpublished astrometric positions and provide these to the scientific community. Using these data we show that our reduction of this astrometric campaign with a reliable stellar catalog substantially improves the quality of the astrometric results. We present evidence that the new data will help to reduce the orbit uncertainty of Apophis during its close approach in 2029. We show that uncertainties due to geolocations of observing stations, as well as rounding of astrometric data can introduce an unnecessary degradation in the quality of the resulting astrometric positions. Finally, we discuss the impact of our campaign reduction on the recovery process of newly discovered asteroids. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ASTEROID 99942 APOPHIS ; NEAR-EARTH OBJECTS ; SPIN-STATE ; CATALOG ; ENCOUNTERS ; MISSION ; SCIENCE |
| 收录类别 | SCI ; EI |
| 原文出处 | http://www.aanda.org/articles/aa/abs/2015/11/aa25603-14/aa25603-14.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000365072200019 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5454]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 作者单位 | 1.Institut de Mécanique Céleste et de Calcul des Éphémérides, Paris Observatory, UPMC, Lille 1 university, UMR 8028 du CNRS, PSL Research University, 77 avenue Denfert Rochereau, 75014 Paris, France 2.Institute for Astrophysics (IfA), University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria 3.Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43, CEP 20.080-090 Rio de Janeiro, RJ, Brazil 4.Observatório Nacional, Rua José Cristino 77, São Cristovão, CEP 20. 921-400 Rio de Janeiro, Brazil 5.Department of Astronomy and Geodesy, Kazan Federal University, Kremlevskaya Str., 18, 420008 Kazan, Russia 6.Academy of Sciences of Tatarstan, Bauman Str., 20, 420111 Kazan, Republic of Tatarstan, Russia 7.TÜBİTAK National Observatory, Akdeniz University Campus, 07058 Antalya, Turkey 8.Department of Computer Science, Jinan University, 510632 Guangzhou, PR China 9.Nikolaev Astronomical Observatory, 1 Observatorna, 54030 Mykolaiv, Ukraine 10.Université de Nice Sophia Antipolis, Observatoire de la Côte d’Azur, CNRS UMR 7293, Laboratoire Lagrange, Bd de l’Observatoire, BP 4229 06304 Nice Cedex 04, France |
| 推荐引用方式 GB/T 7714 | W. Thuillot,D. Bancelin,A. Ivantsov,et al. The astrometric Gaia-FUN-SSO observation campaign of 99942 Apophis[J]. ASTRONOMY & ASTROPHYSICS,2015,583. |
| APA | W. Thuillot.,D. Bancelin.,A. Ivantsov.,J. Desmars.,M. Assafin.,...&Zhang XL.(2015).The astrometric Gaia-FUN-SSO observation campaign of 99942 Apophis.ASTRONOMY & ASTROPHYSICS,583. |
| MLA | W. Thuillot,et al."The astrometric Gaia-FUN-SSO observation campaign of 99942 Apophis".ASTRONOMY & ASTROPHYSICS 583(2015). |
入库方式： OAI收割
来源：云南天文台
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