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The stability of the solar system dynamical evolution via Nice Model

Grant number: 15/15588-9
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): December 01, 2015
Effective date (End): August 02, 2019
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Solar System Astronomy
Principal Investigator:Ernesto Vieira Neto
Grantee:Rafael Ribeiro de Sousa
Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil
Associated research grant:11/08171-3 - Orbital dynamics of minor bodies, AP.TEM
Associated scholarship(s):17/09919-8 - A study of the self-gravitating planetesimal disk on Nice Model and the dynamical formation of the Kuiper Belt, BE.EP.DR


For three centuries astronomers and mathematicians have studied the problem of the solar system stability. The high analytical complexity of this issue prevented some advances that could only be achieved with the advent of computers and current numerical techniques. The dynamic evolution of the solar system is classified as chaotic. But the long age of stability of the Solar System suggests that, despite the chaos, the system tends to avoid dynamic instabilities and search for conditions of stability. The Nice model deals with the dynamical evolution of the solar system from the formation of planets to the current settings and explains phenomena and settings found in astronomical observations. Furthermore, the Nice model achieved a stable configuration for the solar system for a long period of time. However, the Nice model treats only with the dynamics of the giant planets of the Solar System and the planetesimal disk. The purpose of this project is to include the main three inner planets of the solar system using the initial conditions of the Nice model and check the stability of this new dynamical system featuring its chaotic level. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBEIRO, RAFAEL DE SOUSA; MORBIDELLI, ALESSANDRO; RAYMOND, SEAN N.; IZIDORO, ANDRE; GOMES, RODNEY; VIEIRA NETO, ERNESTO. Dynamical evidence for an early giant planet instability. ICARUS, v. 339, . (16/24561-0, 15/15588-9, 16/19556-7, 17/09919-8, 16/12686-2)
DE SOUSA, RAFAEL RIBEIRO; GOMES, RODNEY; MORBIDELLI, ALESSANDRO; NETO, ERNESTO VIEIRA. Dynamical effects on the classical Kuiper belt during the excited-Neptune model. ICARUS, v. 334, p. 89-98, . (15/15588-9, 17/09919-8)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SOUSA, Rafael Ribeiro de. The instability in the dynamical evolution of the solar system: sonsiderations about the time of instability and formation of the Kuiper belt. 2019. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Guaratinguetá Guaratinguetá.

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