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Photometric analysis for the spin parameters and shapes of asteroids (362) Havnia and (506) Marion
Wang XB(王晓彬)1,2; Muinonen, Karri3,4; Wang YB(王夷博)1,5; Wang, XB (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊PLANETARY AND SPACE SCIENCE
2015-12-01
卷号118页码:242-249
DOI10.1016/j.pss.2015.08.001
产权排序第1完成单位
收录类别SCI
关键词Asteroids Photometric Data Spin Parameters Convex Shape Uncertainty
摘要The physical properties of asteroids, such as their spin and shape, are very important for understanding the formation and evolution of the entire asteroid belt, as well as the individual asteroid itself. However, only a small part of asteroids had been determined accurately for their spin parameters and shapes due to lack of data or narrow aspect angle distribution of dataset. In the present paper, the spin parameters and convex shapes of two C-type main-belt asteroids (362) Havnia and (506) Marion are analyzed using the convex inversion method and the virtual-photometry Monte Carlo method. A pair of poles are found for (362) Havnia at (96 degrees. 2(-2.0)(+3.0), + 38 degrees. 8(-2.4)(+6.8)) and (273 degrees. 0(-6.5)(+1.3), + 40 degrees. 0(-9.9)(+1.2)) in ecliptic coordinates, the spin period values corresponding to the two poles are 16. 918773(-6.4(-6))(+2.8(-5)) h (here +2.8(-5) represents +2.8 x 10(-5)) and 16. 918935(-4.3(-5))(+1.2(-5)) h, respectively. Similarly, two candidate poles are found for (506) Marion at (88 degrees. 0(-0.3)(+1.3), + 22 degrees. 3(-1.5)(+1.3)) and (264 degrees. 5(-0.03)(+1.2), - 7 degrees. 5(-0.92)(+1.1)). The spin periods for the two poles are 13. 549826(-9.8(-6))(+1.2(-5)) h and 13.549751(-5.9(-6))(+1.3(-5)) h. The shapes of Havnia for the pair of poles approximate to Maclaurin spheroids. Whereas the convex shapes of Marion for the two poles are prolate shapes, and it rotates around the longest axis. The significant divergence of weight coefficients c for Havina and Marion implies different materials on the two asteroids' surface. (C) 2015 Elsevier Ltd. All rights reserved.
项目资助者NSFC(1107305) ; Academy of Finland(127461) ; Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0032-0633
URL查看原文
WOS记录号WOS:000370460100029
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LIGHTCURVE INVERSION ; OPTIMIZATION METHODS ; MODELS ; SET
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6806
专题系外行星研究组
中国科学院天体结构与演化重点实验室
通讯作者Wang, XB (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, CAS, P.O. Box 110, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, China
3.Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
4.Finnish Geospatial Research Institute, P.O. Box 15, FI-02431 Masala, Finland
5.University of Chinese Academy of Sciences, Beijing 100049, China
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Wang XB,Muinonen, Karri,Wang YB,et al. Photometric analysis for the spin parameters and shapes of asteroids (362) Havnia and (506) Marion[J]. PLANETARY AND SPACE SCIENCE,2015,118:242-249.
APA Wang XB,Muinonen, Karri,Wang YB,&Wang, XB .(2015).Photometric analysis for the spin parameters and shapes of asteroids (362) Havnia and (506) Marion.PLANETARY AND SPACE SCIENCE,118,242-249.
MLA Wang XB,et al."Photometric analysis for the spin parameters and shapes of asteroids (362) Havnia and (506) Marion".PLANETARY AND SPACE SCIENCE 118(2015):242-249.
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