CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY Vol. 95 Nos. 1-4 2006 Special Issue Periodic, Quasi-Periodic and Chaotic Motions in Celestial Mechanics Theory and Applications Selected Papers from the Fourth Meeting on Celestial Mechanics, CELMEC IV San Martino ai Cimino (Italy), 11-16 September 2005 Edited by Alessandra Celletti and Sylvio Ferraz-Mello Preface Periodic Orbits and Variational Methods S. TERRACINI / On the variational approach of the periodic n-body problem A.D. BRUNO and V.P. VARIN / On families of periodic solutions of the restricted three-body problem E. BARRABES, J.M. CORS, C. PINYOL and J. SOLER / Hip-hop solutions of the 2N-body problem V. BARUTELLO and S. TERRACINI / Double choreographical solutions the n-body type problems 67-80 J.-F. PALACIAN and P. YANGUAS / From the circular to the spatial elliptic restricted three-body problem 81-99 C. BELMONTE, D. BOCCALETTI and G. PUCACCO / Stability of axial orbits in galactic potentials 101-116 Perturbation Theory and Regularization A. CELLETTI and L. CHIERCHIA / KAM tori for N-body problems: a brief history 117-139 C. FROESCHLE, E. LEGA and M. GUZZO/ Analysis of the chaot- ic behaviour of orbits diffusing along the Arnold web E. CANALIAS, A. DELSHAMS, J.J. MASDEMONT and P. ROLDAN / The scattering map in the planar restricted three body problem 155-171 M. ALVAREZ, J.M. CORS and J. DELGADO / On final evolutions in the restricted planar parabolic three-body problem 173-200 J.WALDVOGEL / Quaternions and the perturbed Kepler problem 201-212 Dynamics of Solar and Extrasolar Systems A. LEMAITRE, S. D’HOEDT, and N. RAMBAUX / The 3:2 spin-orbit resonant motion of Mercury 213-224 J.D. HADJIDEMETRIOU / Symmetric and asymmetric librations in extrasolar planetary systems: a global view 225-244 F. NAMOUNI and J.L. ZHOU / The influence of mutual perturba- tions on the eccentricity excitation by jet acceleration in extra- solar planetary systems 245-257 G. VOYATZIS and J.D. HADJIDEMETRIOU / Symmetric and asymmetric 3:1 resonant periodic orbits with an application to the 55Cnc extra-solar system 259-271 Z. SANDOR / Estimations of orbital parameters of exoplanets from transit photometry by using dynamical constraints 273-285 S. BREITER and A. ELIPE / Critical inclination in the main problem of a massive satellite 287-297 M. FOUCHARD, C. FROESCHLE, G. VALSECCHI and H. RICKMAN / Long-term effects of the Galactic tide on cometary dynamics 299-326 A. CELLETTI and G. PINZARI / Dependence on the observational time intervals and domain of convergence of orbital determina- tion methods 327-344 Space Dynamics and Applications A. ROSSI and G.B. VALSECCHI / Collision risk against space debris in earth orbits M. DELLNITZ, O. JUNGE, M. POST and B. THIERE / On target for Venus — set oriented computation of energy efficient low thrust trajectories 357-370 C. CIRCI and P. TEOFILATTO /W eak stability boundary trajecto- ries for the deployment of lunar spacecraft constellations 371-390 R. ARMELLIN, M. LAVAGNA and A. ERCOLI-FINZI Aero-gravity assist maneuvers: controlled dynamics modeling and optimization B. DE SAEDELEER / Analytical theory of a lunar artificial satellite with third body perturbations 407-423 A. CACCIANI, R. BRIGUGLIO, F. MASSA and P. RAPEX / Precise measurement of the solar gravitational red shift 425-437 Available .* online www.springerlink.com