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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
Source PublicationPLANETARY AND SPACE SCIENCE
2015-12-01
Volume118Pages:242-249
DOI10.1016/j.pss.2015.08.001
Contribution Rank第1完成单位
Indexed BySCI
KeywordAsteroids Photometric Data Spin Parameters Convex Shape Uncertainty
Abstract

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.

Funding ProjectNSFC[1107305] ; Academy of Finland[127461] ; Chinese Academy of Sciences
Funding OrganizationNSFC[1107305] ; Academy of Finland[127461] ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Publication PlaceTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
ISSN0032-0633
URL查看原文
WOS IDWOS:000370460100029
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLIGHTCURVE INVERSION ; OPTIMIZATION METHODS ; MODELS ; SET
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6806
Collection系外行星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorWang XB(王晓彬)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang XB,Muinonen, Karri,Wang YB. 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.(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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