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Lebedev acceleration and comparison of different photometric models in the inversion of lightcurves for asteroids
Lu, Xiao-Ping1,3; Huang, Xiang-Jie1; Ip, Wing-Huen1,2; Hsia, Chi-Hao1
2018-04-01
Source PublicationPLANETARY AND SPACE SCIENCE
ISSN0032-0633
Volume153Pages:1-10
Corresponding AuthorLu, Xiao-Ping(xplu@must.edu.mo)
AbstractIn the lightcurve inversion process where asteroid's physical parameters such as rotational period, pole orientation and overall shape are searched, the numerical calculations of the synthetic photometric brightness based on different shape models are frequently implemented. Lebedev quadrature is an efficient method to numerically calculate the surface integral on the unit sphere. By transforming the surface integral on the Cellinoid shape model to that on the unit sphere, the lightcurve inversion process based on the Cellinoid shape model can be remarkably accelerated. Furthermore, Matlab codes of the lightcurve inversion process based on the Cellinoid shape model are available on Github for free downloading. The photometric models, i.e., the scattering laws, also play an important role in the lightcurve inversion process, although the shape variations of asteroids dominate the morphologies of the lightcurves. Derived from the radiative transfer theory, the Hapke model can describe the light reflectance behaviors from the viewpoint of physics, while there are also many empirical models in numerical applications. Numerical simulations are implemented for the comparison of the Hapke model with the other three numerical models, including the Lommel-Seeliger, Minnaert, and Kaasalainen models. The results show that the numerical models with simple function expressions can fit well with the synthetic lightcurves generated based on the Hapke model; this good fit implies that they can be adopted in the lightcurve inversion process for asteroids to improve the numerical efficiency and derive similar results to those of the Hapke model.
KeywordCellinoid Lightcurves Asteroids Lebedev Photometric
DOI10.1016/j.pss.2017.12.001
WOS KeywordCELLINOID SHAPE MODEL ; ATMOSPHERELESS BODIES ; OPTIMIZATION METHODS ; MISSION ; SURFACE ; GAIA
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000428484700001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22434
Collection中国科学院紫金山天文台
Corresponding AuthorLu, Xiao-Ping
Affiliation1.Macau Univ Sci & Technol, Ave Wai Long, Taipa, Macao, Peoples R China
2.Natl Cent Univ, Inst Astron, Taoyuan, Taiwan
3.Chinese Acad Sci, Key Lab Planetary Sci, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Lu, Xiao-Ping,Huang, Xiang-Jie,Ip, Wing-Huen,et al. Lebedev acceleration and comparison of different photometric models in the inversion of lightcurves for asteroids[J]. PLANETARY AND SPACE SCIENCE,2018,153:1-10.
APA Lu, Xiao-Ping,Huang, Xiang-Jie,Ip, Wing-Huen,&Hsia, Chi-Hao.(2018).Lebedev acceleration and comparison of different photometric models in the inversion of lightcurves for asteroids.PLANETARY AND SPACE SCIENCE,153,1-10.
MLA Lu, Xiao-Ping,et al."Lebedev acceleration and comparison of different photometric models in the inversion of lightcurves for asteroids".PLANETARY AND SPACE SCIENCE 153(2018):1-10.
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