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Cellinoid Shape Model for Asteroids
Lu, Xiaoping1; Zhao, Haibin2; You, Zhong3
2014-08-01
Source PublicationEARTH MOON AND PLANETS
ISSN0167-9295
Volume112Issue:1-4Pages:73-87
AbstractThe ellipsoid shape model plays an important role in physical research on asteroids. However, its symmetric structure cannot practically simulate real asteroids. This article applies a general shape model, named the cellinoid, instead of the ellipsoid model to simulate the asymmetric shape of asteroids. The cellinoid shape model consists of eight octants of ellipsoids having different semi-axes, with the constraint that adjacent octants must have two equal semi-axes in common. Totally, the shape of the cellinoid model is controlled by six parameters, not three as in the case of the shape of the ellipsoid. Using this shape model, the brightness of asteroids observed from the Earth can be fitted numerically by the surface triangularization of the cellinoid. The Levenberg-Marquardt algorithm is also employed here to solve a nonlinear minimization problem. Owing to the asymmetric shape of the cellinoid, the physical parameters of asteroids, such as the rotation period and pole orientation, can be fitted more accurately than in the case of the ellipsoid model. Finally, this is confirmed numerically by applying the shape to both synthetic light curves and real light curves of asteroids. Additionally, the center of mass and moment of inertia of the cellinoid are analyzed explicitly.
KeywordShape Model Light Curves Photometric Asteroids
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11038-014-9439-5
WOS KeywordPOLARIMETRIC PHASE CURVES ; ATMOSPHERELESS BODIES ; BRIGHTNESS VARIATIONS ; LIGHTCURVE INVERSION ; OPTIMIZATION METHODS ; RADIATIVE-TRANSFER ; SURFACES
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Geology
WOS SubjectAstronomy & Astrophysics ; Geosciences, Multidisciplinary
WOS IDWOS:000339720000007
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10663
Collection盱眙天文观测站
Affiliation1.Macau Univ Sci & Technol, Dept Gen Educ, Taipa, Macau, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
3.Macau Univ Sci & Technol, Fac Informat Technol, Taipa, Madhya Pradesh, Peoples R China
Recommended Citation
GB/T 7714
Lu, Xiaoping,Zhao, Haibin,You, Zhong. Cellinoid Shape Model for Asteroids[J]. EARTH MOON AND PLANETS,2014,112(1-4):73-87.
APA Lu, Xiaoping,Zhao, Haibin,&You, Zhong.(2014).Cellinoid Shape Model for Asteroids.EARTH MOON AND PLANETS,112(1-4),73-87.
MLA Lu, Xiaoping,et al."Cellinoid Shape Model for Asteroids".EARTH MOON AND PLANETS 112.1-4(2014):73-87.
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