Cellinoid Shape Model for Asteroids
文献类型：期刊论文
| 作者 | Lu, Xiaoping1; Zhao, Haibin2 ; You, Zhong3
|
| 刊名 | EARTH MOON AND PLANETS
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 112期号:1-4页码:73-87 |
| 关键词 | Shape model Light curves Photometric Asteroids |
| ISSN号 | 0167-9295 |
| 英文摘要 | The 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Astronomy & Astrophysics ; Geology |
| 关键词[WOS] | POLARIMETRIC PHASE CURVES ; ATMOSPHERELESS BODIES ; BRIGHTNESS VARIATIONS ; LIGHTCURVE INVERSION ; OPTIMIZATION METHODS ; RADIATIVE-TRANSFER ; SURFACES |
| 收录类别 | SCI |
| 原文出处 | 10.1007/s11038-014-9439-5 |
| 语种 | 英语 |
| WOS记录号 | WOS:000339720000007 |
| 公开日期 | 2014-11-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10663]  |
| 专题 | 紫金山天文台_盱眙天文观测站 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：紫金山天文台
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