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The distinct light curve shape of the asteroid (469)
Wang XB(王晓彬); Zhang XL(张西亮); Gu SH(顾盛宏)
Source PublicationEARTH MOON AND PLANETS
2005-12
Volume97
Issue3-4
Pages233-243
DOI10.1007/s11038-006-9094-6
Contribution Rank第1完成单位
Indexed BySCI ; EI ; CPCI
Conference NameAsteroids, Comets and Meteors Meeting
Conference Date2005-08
Conference PlaceBuzios, BRAZIL
KeywordAsteroids Precession Satellite
Abstract

The observation light curves of the main belt asteroid (469) Argentina, obtained on March 9-11 2002 and August 10-11 2004, are presented in this paper. The complex light curve of the (469) suggests that it may be in NPA rotation. Using the Fourier analysis method, some prominent spectrum values are derived individually for two subset data. Among these period values, periods of 13.00 and 8.74 h are regarded as basic components. Other derived period values can be combined linearly with these two basic period values. If the (469) is in a free-force precession mode, the motion mode will be LAM (largest-axis mode) according the ratio of precession and rotation periods. And the minimum of I (1)/I (3) (ratio of the largest and smallest principal momentum of inertial) is 3.05. Assuming an external torque releasing by a satellite forces the (469) to precess, the mass of satellite roughly is the same order as the primary's on condition that the precession and rotation periods are two basic values. At present, we cannot draw an unambiguous conclusion on (469)'s motion for sparse data, So the further observations are necessary for understanding the (469)'s tumbling motion farther.

Funding OrganizationN/A
Language英语
Subject Area天文学 ; 天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle; Proceedings Paper
PublisherSPRINGER
Publication PlaceVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN0167-9295
URL查看原文
WOS IDWOS:000241128100006
WOS Research AreaAstronomy & Astrophysics ; Geology
WOS SubjectAstronomy & Astrophysics ; Geosciences, Multidisciplinary
WOS KeywordTumbling Asteroids ; Binary Asteroids
EI Accession Number2924894
EI Classification Number72.17extraterrestrial Geology
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6824
Collection系外行星研究组
Corresponding AuthorWang XB(王晓彬)
AffiliationNational Astronomical Observatories/Yunnan Observatory, United laboratory for optical astronomy, Chinese Academy of Sciences, P.O.Box 110, Kunming, Yunnan Province, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang XB,Zhang XL,Gu SH. The distinct light curve shape of the asteroid (469)[C]. VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS:SPRINGER,2005:233-243.
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