Direct planetary perturbations on satellite motions

• Processo: 10/52715-5
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Data de Início da vigência: 01 de agosto de 2011
• Data de Término da vigência: 30 de junho de 2013
• Área de conhecimento: Ciências Exatas e da Terra - Astronomia - Astronomia de Posição e Mecânica Celeste
• Pesquisador responsável: Tadashi Yokoyama
• Beneficiário: Julien Henri Pierre Frouard
• Instituição Sede: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brasil
• Assunto(s): Mecânica celeste Migração planetária Satélites planetários Colisões
• Palavra(s)-Chave do Pesquisador: Colisoes | Estabilidade De Satelites | Funcao Perturbadora | Mecanica Celeste | Migracao Planetaria | Satelites Planetarios

Resumo

The work we would like to present to FAPESP is linked to gravitational dynamics, and particularly to Celestial Mechanics. With the advent of modem observational means, new populations of satellites and asteroids are found in the Solar System. These new objects, like the outer satellites of giant planets or the satellites of asteroids, are subject to perturbations that are usually neglected when dealing with classical objects. For most of these new satellites, these perturbations come from bodies which are orbiting about different masses than the satellites (epyciclic motions). As there are no analytical formulations for these perturbations, they need a special treatment. The aim of this work is thus to find analytical ways to express these perturbations and to study their influence on the motion of these newly found objects. This work has also strong implications in the study of the motion of classical bodies whose analytical formulations are still not known, for example the case of near earth asteroids perturbed by the Moon. In addition to the above ideas, we also intend to develop some research related to possible mechanisms to damp the excited values of the eccentricity and inclination of the regular satellites. During the planetary migration (the Nice model), due to several dose approaches, collisions, etc, the eccentricity and inclination of the regular satellites can reach values which are not compatibles with the current ones. (AU)

Publicações científicas

(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)

FROUARD, JULIEN; COMPERE, AUDREY. Instability zones for satellites of asteroids: The example of the (87) Sylvia system. ICARUS, v. 220, n. 1, p. 149-161, JUL 2012. (10/52715-5)

FROUARD, JULIEN; YOKOYAMA, TADASHI. Analytical direct planetary perturbations on the orbital motion of satellites. CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, v. 115, n. 1, p. 59-79, JAN 2013. (10/52715-5)