author = "Aljbaee, S. and Chanut, T. G. G. and Carruba, V. and Souchay, J. 
                         and Prado, Antonio Fernando Bertachini de Almeida and Amarante, 
          affiliation = "{Universidade Estadual Paulista (UNESP)} and {Universidade 
                         Estadual Paulista (UNESP)} and {Universidade Estadual Paulista 
                         (UNESP)} and {Observatoire de Paris} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Estadual Paulista 
                title = "The dynamical environment of asteroid 21 Lutetia according to 
                         different internal models",
              journal = "Monthy Notices of the Royal Astronomical Soceity",
                 year = "2017",
               volume = "464",
               number = "3",
                pages = "3552--3560",
                month = "Jan.",
             keywords = "gravitation, celestial mechanics, minor planets, asteroids: 
                         individual: (21) Lutetia.",
             abstract = "One of the most accurate models currently used to represent the 
                         gravity field of irregular bodies is the polyhedral approach. In 
                         this model, the mass of the body is assumed to be homogeneous, 
                         which may not be true for a real object. The main goal of the this 
                         paper is to study the dynamical effects induced by three different 
                         internal structures (uniform, three- and four-layered) of asteroid 
                         (21) Lutetia, an object that recent results from space probe 
                         suggest being at least partially differentiated. The Mascon 
                         gravity approach used in the this work consists of dividing each 
                         tetrahedron into eight parts to calculate the gravitational field 
                         around the asteroid. The zero-velocity curves show that the 
                         greatest displacement of the equilibrium points occurs in the 
                         position of the E4 point for the four-layered structure and the 
                         smallest one occurs in the position of the E3 point for the 
                         three-layered structure. Moreover, stability against impact shows 
                         that the planar limit gets slightly closer to the body with the 
                         four-layered structure. We then investigated the stability of 
                         orbital motion in the equatorial plane of (21) Lutetia and propose 
                         numerical stability criteria to map the region of stable motions. 
                         Layered structures could stabilize orbits that were unstable in 
                         the homogeneous model.",
                  doi = "10.1093/mnras/stw2619",
                  url = "http://dx.doi.org/10.1093/mnras/stw2619",
                 issn = "0035-8711",
             language = "en",
           targetfile = "aljbaee.pdf",
        urlaccessdate = "17 abr. 2021"