PERIODIC ORBITS, STABILITY AND RESONANCES PERIODIC ORBITS, STABILITY AND RESONANCES PROCEEDINGS OF A SYMPOSIUM CONDUCTED BY THE UNIVERSITY OF SAO PAULO, THE TECHNICAL INSTITUTE OF AERONAUTICS OF SAO JOSE DOS CAMPOS,AND THE NATIONAL OBSERVATORY OF RIO DE JANEIRO, AT THE UNIVERSITY OF SAO PAULO, SAO PAULO,BRASIL,4-12 SEPTEMBER, 1969 Edited by G. E. O. GIACAGLIA Escola Politecnica, University of Sao Paulo and Instituto de Matematica, University of Campinas, Sao Paulo, Brasil D. REIDEL PUBLISHING COMPANY DORDRECHT-HOLLAND Library of Congress Catalog Card Number 74-124848 SBN Number 9027701709 lSBN-13: 978-94-010-3325-1 e-lSBN-13: 978-94-010-3323-7 DOl: 10.1007/ 978-94-010-3323-7 All Rights Reserved Copyright © 1970 by D. Reidel Publishing Company, Dordrecht, Holland Softcover reprint of the hardcover 1st edition 1970 No part of this book may be reproduced in any form, by print, photoprint, microfilm, or any other means, without written permission from the publisher "There once was a comet quite old Whose core grew gradually cold It began to librate With amplitude great And now has a shell of green mould." W. T. KYNER PREFACE The subjects of resonance and stability are closely related to the problem of evolution of the solar system. It is a physically involving problem and the methods available to mathematics today seem unsatisfactory to produce pure non linear ways of attack. The linearization process in both subjects is clearly of doubtful significance, so that, even if very restrictive, numerical solutions are still the best and more valuable sources of informations. It is quite possible that we know now very little more of the entire problem that was known to Poincare, with the advantage that we can now compute much faster and with much more precision. We feel that the papers collected in this Symposium have contributed a step forward to the comprehension of Resonance, Periodic Orbits and Stability. In a field like this, it would be a surprise if one had gone a long way toward that comprehension, during the short time of two weeks. But we are sure that the joint efforts of all the scientists involved has produced and will produce a measurable acceleration in the process. If this is true it will be a great satisfaction to us that this has happened in Brasil. The Southern Hemisphere in America has now begun to participate actively in the Astro nomical Society and for this, we are grateful to everyone who has helped. G. E. O. GIACAGLIA December, 1969 FOREWORD This volume presents the invited and contributed papers of the International Sympo sium on 'Periodic Orbits, Stability and Resonances' held in Sao Paulo from the 4th to the 12th of September, 1969. The papers are arranged in the same order as they were presented. The purpose of the Symposium was to congregate scientists from all over the world to discuss one of the most exciting topics in Celestial Mechanics. It served to provide stimulation for researches in Astronomy in the Southern Hemisphere. In the overall, it resulted also as a catalyzer for development of new methods in Applied Mathematics. We extend our thanks to the following Institutions who have financially supported the expenses for the participants of the Symposium: a Funda'Yao de Amparo Pesquisa do Estado de Sao Paulo Conselho Nacional de Pesquisas Prefeitura do Municipio de Sao Paulo Horsa - Hoteis Reunidos S.A. Varig - Via'Yao Aerea Riograndense Constru'Yoes e Comercio Camargo Correa S.A. Ceramica Sanitaria Porcelite S.A. Ford Motors do Brasil S.A. Chrysler do Brasil S.A. We have deeply appreciated the prompt collaboration of the invited lecturers and the scientific support received by the International Astronomical Union. It is our pleasure to include in this volume a letter by Prof. C. de Jager, Assistant Secretary ofthe IAU, which was read in the opening session of the Symposium. The Executive Committee of the Symposium was composed by Prof. AbraMo de Moraes, President Prof. Luiz Muniz Barreto Prof. Sylvio Ferraz Mello Prof. Victor Szebehely, Coordinator in U.S.A. Prof. G. E. O. Giacaglia, General Coordinator Dr. Iussef Hana Abduch, General Secretary It is our duty to acknowledge the assistance of Mrs. M. Olympia A. F. Fran'Ya who arranged the social activities, Mrs. Mary Y ohanna who arranged the reception scheme and Mr. G. Schmidt, Assistant Secretary of the Symposium. LETTER OF PROFESSOR DE JAGER TO THE ORGANIZING COMMITTEE At the occasion of the Symposium on 'Periodic Orbits, Stability and Resonances', to be held in Sao Paulo, from 4 till 12 September 1969, the International Astronomical Union wishes to congratulate you and the other Members of the Executive Com mittee of this Symposium for the interesting meeting that you have organized. We send you our best wishes for a successful and highly stimulating scientific meeting. The International Astronomical Union regrets that too few large astronomical meetings take place in Latin America and very much welcomes the present Symposium. The Union expresses the hope that this may stimulate young scientists in Brasil and other Latin-American countries in their study of astronomy, and hopes that the Symposium may contribute to the further development of astronomy in your continent. For the Executive Committee of the International Astronomical Union, c. DE JAGER, Assistant General Secretary TABLE OF CONTENTS Preface VII Foreword IX Letter of Professor De Jager to the Organizing Committee XI ANDRE DEPRIT and JACQUES HENRARD / The Trojan Manifold-Survey and Conjectures 1 P. J. MESSAGE / On Asymmetric Periodic Solutions of the Plane Restricted Problem of Three Bodies 19 EUGENE RABE / Two New Classes of Periodic Trojan Librations in the Elliptic Restricted Problem and Their Stabilities 33 J. SCHUBART / Minor Planets on Commensurable Orbits with Approaches to Jupiter 45 HARRY POLLARD / Disintegration and Escape 53 O. GODAR T / Secular Variations Determined by a Surface of Section 56 DONALD G. SAARI/On Bounded Solutions of the n-Body Problem 76 AHMED A. KAMEL and JOHN V. BREAKWELL / Stability of Motion near Sun- Perturbed Earth-Moon Triangular Libration Points 82 G. E. O. GIACAGLIA and L. N. F. FRANC;A / Motion near Sun Perturbed Earth- Moon Collinear Equilibrium Points (Status Report) 91 G. E. O. GIACAGLIA and PAUL E. NACOZY / Resonances in the Elliptic Restricted Problem 96 B. E. SCHUTZ and B. D. TAPLEY / Numerical Studies of Solar Influenced Particle Motion near the Triangular Earth-Moon Libration Points 128 w. J. KLEPCZYNSKI/ On Using Minor Planets Close to the 2: 1, 3:2, 4:3 Commensurabilities to Determine the Mass of Jupiter 143 B. G. MARSDEN / On the Relationship Between Comets and Minor Planets 151 s. FERRAZ-MELLO / Absolute Orbits and Jupiter's Great Satellites (Progress Report) 164 MARKO SVEC / Existence of Periodic Solutions of Differential Equations of Second Order 168 G. BOZIS / Sets of Collision Periodic Orbits in the Restricted Problem 176 LLOYD CARPENTER / Periodic Orbits in Trigonometric Series 192 SAMUEL PINES / Bifurcation Limits for the Existence of Periodic Orbits 210 PEDRO E. ZADUNAISKY / On the Accuracy in the Numerical Computation of Orbits 216 XIV TABLE OF CONTENTS RICHARD B. BARRAR / On the Non-Existence of Transformations to Normal Form in Celestial Mechanics 228 WILLIAM A. MERSMAN / A Unified Treatment of Lunar Theory and Artificial Satellite Theory 232 JOHN P. VINTI / Stability of Free Rotation of a Rigid Body 259 J. M. A. DANBY / Wild Dynamical Systems, and the Role of Two or More Small Divisors 272 J. KEVORKIAN / The Planar Motion of a Trojan Asteroid 286 JURIS VAGNERS / On the Long-Term Evolution of Lunar Satellite Orbits 304 J. L. SERSIC / Transient Annular Structures in Exploding Galaxies 314 G. CONTOPOULOS / Resonance Phenomena in Spiral Galaxies 322 G. COLOMBO and F. A. FRANKLIN / On the Evolution of the Solar System and the Pluto-Neptune Case 328 ROBERT EASTON / Flows near Isolated Invariant Sets in Dimension 3 332 w. M. OLIV A / Dynamical Systems on Manifolds 337 NELSON ONUCHIC / On a Criterion of Instability for Differential Equations with Time Delay 339 DAVID FISHER / The Libration Case ofthe Stellar Problem of Three Bodies 343 MICHEL HENON and MONIQUE GUYOT / Stability of Periodic Orbits in the Restricted Problem 349 E. MYLES STANDISH, JR. / New Periodic Orbits in the General Problem of Three Bodies 375 VICTOR SZEBEHEL Y / New Families of Periodic Orbits in the General Planar Problem of Three Bodies 382 WILLIAM H. JEFFERYS / Stability and Resonances in the Restricted Problem 397 v. A. BRUMBERG / Application of Hill's Lunar Method in General Planetary Theory 410 Y. KOZAI/ Stationary and Periodic Solutions for the Restricted Problem of Three Bodies in Three-Dimensional Space 451 C. FREDERICK PETERS / Motion ofa Space Probe near an Oblate Planet 469 BORIS GARFINKEL / On the Ideal Resonance Problem 474 PETER HAGEDORN / Parametric Resonance in Certain Nonlinear Systems 482 GEN-ICHIRO HORI / Resonances in Duffing's Problem 493 w. T. KYNER / Passage Through Resonance 501 G. E. o. GIACAGLIA / Two Centers of Libration 515 THE TROJAN MANIFOLD - SURVEY AND CONJECTURES ANDRE DEPRIT and JACQUES HENRARD Boeing Scientific Research Laboratories. Seattle, Wash., U.S.A. Abstract. Recent results concerning the families of periodic orbits emanating from the triangular equilibrium L4 are interpreted in an attempt to establish the evolution of these manifolds as the mass ratio varies from Routh's critical value down to its value in the system sun-jupiter. We show in this report how recent results concerning the equilateral equilibrium L4 in the planar restricted problem of three bodies point to some conjectures about the genealogy of families of periodic orbits, and especially about their evolution through a resonance. The new results discussed here are related, in the local, to Liapunov's theorem about the emergence of a family of periodic orbits from an eqUilibrium, and, in the global, to conjectures about the natural termination of the family of Trojan orbits. These results clarify in part the role ofresonances. The state of the problem prior to the year 1966 has been covered by Professor Szebehely in his Theory 0/ Periodic Orbits. The present report restricts itself to contributions made in the last three years. 1. Introduction Jl. is the mass ratio so dimensioned that the interval 0 < Jl. ::::;; -1 covers the range of values considered in the restricted problem from the degenerate case Jl.=0 which is the planar problem of two bodies to the symmetric case Jl. = -1 which is the Copenhagen case. C is the Jacobian constant defined so that, whatever the mass ratio Jl. may be, it is equal to 3 at the equilibrium L4• For mass ratios in the interval I: 0 < Jl. < Jl.I = 0.038 520897 ... the flow of trajectories in the vicinity of L4 is described by a conservative irreversible Hamiltonian function with two degrees of freedom :Yl' == :Yl'(I, s, L, S;Jl.) =:Yl'2 + L :Yl'n (1) where n~3 and, for any n ~ 3, :Yl'n is a homogeneous polynomial of degree n in LI/2 and SI/2, its coefficients being finite trigonometric sums in the arguments I and s with the d' Alem bert characteristic. The frequencies being such that o < A. < 1//'1 < < 1, (J there exists a sequence of critical mass ratios (k ~ 1), such that Let Kbe the subset of I cleared of the critical mass ratios. G. E. O. Giacaglia (ed.). Periodic Orbits. Stability and Resonances. 1-18. All Rights Reserved. Copyright © 1970 by D. Reidel Publishing Company. Dordrecht-Holland
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