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@Article{MotaRocc:2019:EqPoSt,
               author = "Mota, Marcelo Lisboa and Rocco, Evandro Marconi",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Equilibrium points stability analysis for the asteroid 21 
                         Lutetia",
              journal = "Journal of Physics. Conference Series",
                 year = "2019",
               volume = "1365",
                pages = "012007",
                 note = "{This work investigates the stability of the equilibrium points 
                         that occur around the} and asteroid (21) Lutetia, assuming that 
                         this body has a constant velocity of rotation and is immersed and 
                         in a gravitational field, whose force of attraction presents a 
                         perturbation with respect to the and {central force due to the 
                         irregular mass distribution of the asteroid. For the calculation 
                         of the} and potential, as well as of the effective potential, was 
                         used the method of the expansion of the and potential in series, 
                         associated to the asteroid decomposition in tetrahedral elements. 
                         The zero and {velocity curves for a massless particle orbiting the 
                         gravitational environment were analyzed. The} and linearized 
                         dynamic equation in the vicinity of the equilibrium points, the 
                         associated characteristic and equation, and the Jacobi constant 
                         were calculated. The validation of the results was ratified by and 
                         simulations of trajectories around these equilibrium points, 
                         considering the gravitational field and {modelled. It should be 
                         emphasized the general nature of the procedures adopted in this 
                         work} and that is, they can be applied to any other asteroid.",
             keywords = "Astrodynamics, Orbital Motion, Small bodies, Asteroids, 
                         Gravitational Potential.",
             abstract = "This work investigates the stability of the equilibrium points 
                         that occur around the asteroid (21) Lutetia, assuming that this 
                         body has a constant velocity of rotation and is immersed in a 
                         gravitational field, whose force of attraction presents a 
                         perturbation with respect to the central force due to the 
                         irregular mass distribution of the asteroid. For the calculation 
                         of the potential, as well as of the effective potential, was used 
                         the method of the expansion of the potential in series, associated 
                         to the asteroid decomposition in tetrahedral elements. The zero 
                         velocity curves for a massless particle orbiting the gravitational 
                         environment were analyzed. The linearized dynamic equation in the 
                         vicinity of the equilibrium points, the associated characteristic 
                         equation, and the Jacobi constant were calculated. The validation 
                         of the results was ratified by simulations of trajectories around 
                         these equilibrium points, considering the gravitational field 
                         modelled. It should be emphasized the general nature of the 
                         procedures adopted in this work, that is, they can be applied to 
                         any other asteroid.",
                  doi = "10.1088/1742-6596/1365/1/012007",
                  url = "http://dx.doi.org/10.1088/1742-6596/1365/1/012007",
                 issn = "1742-6588",
                label = "lattes: 0088337156908774 2 MotaRocc:2019:EqPoSt",
             language = "pt",
           targetfile = "motta_equilibrium.pdf",
        urlaccessdate = "29 nov. 2020"
}


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