High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem

Terms in the analytic expansion of the doubly averaged disturbing function for the circular restricted three-body problem using the Legendre polynomial are explicitly calculated up to the fourteenth order of semimajor axis ratio (α) between perturbed and perturbing bodies in the inner case (α<1),...

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Main Author: Takashi Ito
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Advances in Astronomy
Online Access:http://dx.doi.org/10.1155/2016/8945090
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author Takashi Ito
author_facet Takashi Ito
author_sort Takashi Ito
collection DOAJ
description Terms in the analytic expansion of the doubly averaged disturbing function for the circular restricted three-body problem using the Legendre polynomial are explicitly calculated up to the fourteenth order of semimajor axis ratio (α) between perturbed and perturbing bodies in the inner case (α<1), and up to the fifteenth order in the outer case (α>1). The expansion outcome is compared with results from numerical quadrature on an equipotential surface. Comparison with direct numerical integration of equations of motion is also presented. Overall, the high-order analytic expansion of the doubly averaged disturbing function yields a result that agrees well with the numerical quadrature and with the numerical integration. Local extremums of the doubly averaged disturbing function are quantitatively reproduced by the high-order analytic expansion even when α is large. Although the analytic expansion is not applicable in some circumstances such as when orbits of perturbed and perturbing bodies cross or when strong mean motion resonance is at work, our expansion result will be useful for analytically understanding the long-term dynamical behavior of perturbed bodies in circular restricted three-body systems.
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spelling doaj-art-9d9f5f1c680d41d29232903f41e27abc2025-02-03T05:47:03ZengWileyAdvances in Astronomy1687-79691687-79772016-01-01201610.1155/2016/89450908945090High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body ProblemTakashi Ito0National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, JapanTerms in the analytic expansion of the doubly averaged disturbing function for the circular restricted three-body problem using the Legendre polynomial are explicitly calculated up to the fourteenth order of semimajor axis ratio (α) between perturbed and perturbing bodies in the inner case (α<1), and up to the fifteenth order in the outer case (α>1). The expansion outcome is compared with results from numerical quadrature on an equipotential surface. Comparison with direct numerical integration of equations of motion is also presented. Overall, the high-order analytic expansion of the doubly averaged disturbing function yields a result that agrees well with the numerical quadrature and with the numerical integration. Local extremums of the doubly averaged disturbing function are quantitatively reproduced by the high-order analytic expansion even when α is large. Although the analytic expansion is not applicable in some circumstances such as when orbits of perturbed and perturbing bodies cross or when strong mean motion resonance is at work, our expansion result will be useful for analytically understanding the long-term dynamical behavior of perturbed bodies in circular restricted three-body systems.http://dx.doi.org/10.1155/2016/8945090
spellingShingle Takashi Ito
High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
Advances in Astronomy
title High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
title_full High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
title_fullStr High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
title_full_unstemmed High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
title_short High-Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three-Body Problem
title_sort high order analytic expansion of disturbing function for doubly averaged circular restricted three body problem
url http://dx.doi.org/10.1155/2016/8945090
work_keys_str_mv AT takashiito highorderanalyticexpansionofdisturbingfunctionfordoublyaveragedcircularrestrictedthreebodyproblem