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2681. http://www.ipa.nw.ru/conference/2002/sovet/PS/GRIGORYA.PS
... 8, ``Celestial Mechanics'', 2002 On non--gravitational acceleration in Harrington--Abell comet motion due to Jupiter O. F. Grigoryan 1 , Yu. D. Medvedev 2 1 Vologda State Pedagogical Unyversity, Vologda, Russia 2 Institute of Applied Astronomy, St. Petersburg, Russia The problem of the tidal forces influence on the cometary nucleus in vicinity of Jupiter is considered. ... It means that the exterior part of cometary nucleus has been broken during approach and went off the nucleus. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/GRIGORYA.PS -- 35.9 Кб -- 19.08.2002
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2682. http://www.ipa.nw.ru/conference/2002/sovet/PS/GUSEV1.PS
... 8, ``Celestial Mechanics'', 2002 Precession and free core nutation of neutron stars A. Gusev, I. Kitiashvili Kazan University, Russia In 1992 Wolszczan and Frail discovered a planetary system around the pulsar PSR 1257+12 [1]. ... Third case: the most likely possibility is the free precession of the pulsar with a rigid 81 neutron star. ... It is known that rotation of the terrestrial planets having rigid mantle and elliptical liquid core is characterized by Free Core Nutation (FCN). ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/GUSEV1.PS -- 35.2 Кб -- 19.08.2002
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2683. http://www.ipa.nw.ru/conference/2002/sovet/PS/GAYAZOV.PS
... 8, ``Celestial Mechanics'', 2002 Parameterization of the Solar Radiation Pressure model for GPS satellites I. S. Gayazov Institute of Applied Astronomy, St. Petersburg, Russia The treatment of solar radiation pressure (SRP) effect until now is the main problem in precise modeling of GPS satellite orbits. ... In practice, however, all seven parameters of the empirical model cannot be confidently determined from phase observations. ... BarґSever Y. E. A new model for GPS yaw attitude. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/GAYAZOV.PS -- 29.9 Кб -- 19.08.2002
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2684. http://www.ipa.nw.ru/conference/2002/sovet/PS/FUKUSH2.PS
... 8, ``Celestial Mechanics'', 2002 New precession formula T. Fukushima National Astronomical Observatory, Tokyo, Japan We modified J. G. Williams' formulation of the precession and the nutation by using the 3ґ1ґ3ґ1 rotation [1] so as to express them in an arbitrary inertial frame of reference. ... Further note that the number of rotational operations needed to express the precessionґnutation matrix reduces from six of the IAU formulation to four of the new one. ... 6] Fukushima T. in IAU Coll. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/FUKUSH2.PS -- 65.8 Кб -- 19.08.2002
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2685. http://www.ipa.nw.ru/conference/2002/sovet/PS/GALUSH.PS
... 8, ``Celestial Mechanics'', 2002 The motion of asteroids at the 5:2 resonance with Jupiter T. Yu. Galushina Tomsk State University, Tomsk, Russia The present work is devoted to investigation of NearґEarth asteroids (NEAs) motion at the 5:2 resonance with Jupiter. ... The initial parameters of orbits were taken from Bowell catalog on January 26, 2002 (ftp://ftp.lowell.edu/pub/elgb/astorb.dat). ... Orbital evolution of near--Earth asteroids close to mean motion resonances. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/GALUSH.PS -- 27.6 Кб -- 19.08.2002
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2686. http://www.ipa.nw.ru/conference/2002/sovet/PS/FIENGA.PS
... 8, ``Celestial Mechanics'', 2002 Two problems in solar systems dynamics, possible solutions and future A. Fienga IMCCEґObservatoire de Paris, Paris, France In this contribution, two major aspects of the new challenges of the solar system dynamics are presented. ... As it was demonstrated by (Standish and Fienga [4]), the perturbations of the Mars orbit by the asteroids are difficult to modelize and they present now the main limitation of the present theory of Mars motion. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/FIENGA.PS -- 26.8 Кб -- 19.08.2002
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2687. http://www.ipa.nw.ru/conference/2002/sovet/PS/FOMINOV.PS
... 8, ``Celestial Mechanics'', 2002 Earth penumbra effects on AES motion taking into account the refraction and the extinction of the light in the atmosphere A. M. Fominov Institute of Applied Astronomy, St. Petersburg, Russia The perturbing acceleration F of the Artificial Earth Satellite (AES) due to the solar ... In step 1, the table of the shadow function values with the angle distances d between the solar disk and the earth disk edge may be calculated. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/FOMINOV.PS -- 31.3 Кб -- 19.08.2002
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2688. http://www.ipa.nw.ru/conference/2002/sovet/PS/EMELYANE.PS
... 8, ``Celestial Mechanics'', 2002 Symplectic integrators for studying the longґterm evolution of highґeccentricity orbits V. V. Emel'yanenko South Ural University, Chelyabinsk, Russia Discoveries of many new objects moving on highґeccentricity orbits in the Solar system and beyond have highlighted the importance of modeling the longґ term evolution of such orbits. ... Astron. ... Preto M., Tremaine S. A class of symplectic integrators with adaptive timestep for separable Hamiltonian systems. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/EMELYANE.PS -- 33.2 Кб -- 19.08.2002
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2689. http://www.ipa.nw.ru/conference/2002/sovet/PS/EROSHKIN.PS
... 8, ``Celestial Mechanics'', 2002 Highґprecision numerical theory of the rigid Earth rotation taking into account the geodetic perturbations G. I. Eroshkin, V. V. Pashkevich Pulkovo Observatory, St. Petersburg, Russia The present investigation is a development of the previous research (Pashkeґ vich, 2000). ... As a result, the numerical theory of the rigid Earth rotation is constructed, which is more adequate to the kinematical solution of the semi--analytical theory SMART97 [1]. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/EROSHKIN.PS -- 24.9 Кб -- 19.08.2002
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2690. http://www.ipa.nw.ru/conference/2002/sovet/PS/DESCAM.PS
... 8, ``Celestial Mechanics'', 2002 Connection between apparent and real orbits of a binary system P. Descamps Institut de M'ecanique C'eleste et de Calcul des ' Eph'em'erides, Paris, France In a binary system, each body describes about the other an elliptical apparent orbit which is the projection of the real orbit on the tangential plane. ... 0.5 0.0 0.5 Dacosd (arcsec) ґ0.5 0.0 0.5 Dd (arcsec) E N W ґ0.5 0.0 0.5 Dacosd (arcsec) ґ0.5 0.0 0.5 Dd (arcsec) E N W October 2001 November 2001 Fig. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/DESCAM.PS -- 48.7 Кб -- 19.08.2002
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2691. http://www.ipa.nw.ru/conference/2002/sovet/PS/EMELYAN.PS
... 8, ``Celestial Mechanics'', 2002 Natural satellites dynamics from observations N. V. Emelianov Sternberg Astronomical Institute, Moscow, Russia Dynamics of the natural satellites has to be studied with the most accuracy for several reasons. ... The advantages of this approach consist in the fact that after processing the photometric data one will have to deal only with the planetocentric satellite motion to fit the satellite orbit to observations. ... In: Astronomy and Geodesy in new millenium. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/EMELYAN.PS -- 39.8 Кб -- 19.08.2002
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2692. http://www.ipa.nw.ru/conference/2002/sovet/PS/DELEFLIE.PS
... CERGA, Grasse, France We give an analytical solution of the Lagrange planetary equations expressed in a set of non singular elements for eccentricity: the semiґmajor axis a, the inclination i, the ascending node \Omega\Gamma ? = !+ ... where e denotes the eccentricity. ... More precisely, the first part of the differential system verified by C and S corresponds to a harmonic oscillator: our method takes into account, in a first step, long period variations of 4 elements: C, \Omega\Gamma S, and ?. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/DELEFLIE.PS -- 31.3 Кб -- 19.08.2002
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2693. http://www.ipa.nw.ru/conference/2002/sovet/PS/CALLEG.PS
... 8, ``Celestial Mechanics'', 2002 Dynamics of resonant planets: The resonances 2:1, 3:2 and 5:2 N. Callegari Jr., ... Numerical tests have shown good agreement between the solutions of the model and the solutions of the correspondent exact equations of a two-- planet system, at least as far as the eccentricities are kept small. ... The critical angles are oe i = (p+1)? 2 \Gamma p? 1 \Gamma $ i (i = 1; 2) (p = 1 for the 2:1 resonance, p = 2 for the 3:2 resonance and p = 2=3 for the 5:2 resonance. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/CALLEG.PS -- 2134.8 Кб -- 19.08.2002
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2694. http://www.ipa.nw.ru/conference/2002/sovet/PS/CHERNE.PS
... 8, ``Celestial Mechanics'', 2002 Using positional observations of minor planets for improving the orientation of star catalogue Yu. ... But expeґ rience shows that this kind of observations can be used succesfully for improving orientation parameters of star catalogues with respect to dynamical reference system. ... Observations of 90 selected minor planets were used in general solution for their orbital elements, orientation parameters and some parameters of phase reґ duction. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/CHERNE.PS -- 28.9 Кб -- 19.08.2002
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2695. http://www.ipa.nw.ru/conference/2002/sovet/PS/BYKOVA1.PS
... 8, ``Celestial Mechanics'', 2002 Investigation of stability of NEAs orbital resonance motions by numerical methods L. E. Bykova Tomsk State University, Tomsk, Russia The problem of orbital stability of resonance NearґEarth asteroids (NEAs) is considered. Most of NEAs have multiple close approaches to the inner maґ jor planets. ... The technique of the investigation of NEAs orbital stability has been develґ oped by author on the basis of the construction of possible motion domains (R) of asteroids. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BYKOVA1.PS -- 30.6 Кб -- 19.08.2002
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2696. http://www.ipa.nw.ru/conference/2002/sovet/PS/BYKOVA2.PS
... 8, ``Celestial Mechanics'', 2002 Solution stabilization algorithms for the estimation of small bodies orbital parameters L. E. Bykova, V. P. Titarenko Tomsk State University, Tomsk, Russia Sometimes there is not enough information for the correct improvement of the orbits of the Solar system small bodies. ... Algorithms have been constructed on the basis of a linear least squares method using additional a priori information about the solution. ... E., Hanson R. J. Solving Least Squares Problems. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BYKOVA2.PS -- 28.9 Кб -- 19.08.2002
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2697. http://www.ipa.nw.ru/conference/2002/sovet/PS/BRUMBERG.PS
... 8, ``Celestial Mechanics'', 2002 Relativistic celestial mechanics--2002: results and prospects V. A. Brumberg Institute of Applied Astronomy, St. Petersburg, Russia 1. ... Due to these researches the subject field of celestial mechanics has been significantly extended beyond the scope of motion of the solar system bodies (weak gravitational fields). ... GRT is based on the Equivalence Principle. ... The most important GRT test for strong gravitational fields is related with binary pulsar motion. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BRUMBERG.PS -- 54.3 Кб -- 19.08.2002
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2698. http://www.ipa.nw.ru/conference/2002/sovet/PS/BORDOVIT.PS
... 8, `` Celestial Mechanics'', 2002 Two trends in the development of numerical algorithms of celestial mechanics T. V. Bordovitsyna, V. A. Avdushev, A. M. Chernitsov Research Institute of Applied Mathematics and Mechanics, Tomsk, Russia The motion of a material particle with the mass m in the gravitational field of the central body with the mass M under the action of conservative forces F i with the potential function V i and non--conservative forces P in a ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BORDOVIT.PS -- 31.6 Кб -- 19.08.2002
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2699. http://www.ipa.nw.ru/conference/2002/sovet/PS/BRETAGN.PS
... 8, ``Celestial Mechanics'', 2002 Analytical theories of the motion of the planets and of the rotation of the rigid Earth P. Bretagnon Institut de m'ecanique c'eleste, Observatoire de Paris, Paris, France 1. Planetary theories The improvement of the techniques of observation and the needs for the spaceґ craft navigation make necessary the construction of high precision solutions for the motion of the planets. ... Solution VSOP82. Astron. Astrophys., ... VSOP87 solutions. ...
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BRETAGN.PS -- 38.7 Кб -- 19.08.2002
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2700. http://www.ipa.nw.ru/conference/2002/sovet/PS/BELETSKY.PS
... Equations are obtained for the plane relative motion of the system on the taut thread (on the assumption that the centre of mass of the system moves along the Keplerian elliptic orbit). ... The torques of gravitational forces, aerodynamic pressure, aerodynamic friction and the aerogradient effect are taken into account. ... First, the problem is investigated in case of taut thread and Keplerian elliptic motion of the centre of mass. ... In a general case the free motion is bound to become connected....
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Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BELETSKY.PS -- 32.2 Кб -- 19.08.2002
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