author = "Gomes, Vivian Martins and Prado, Antonio Fernando Bertachini de 
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Close approaches for a cloud of particles with the moon",
            booktitle = "Proceedings...",
                 year = "2012",
                pages = "84--89",
         organization = "World Congress on Applied Computing Conference, 5.",
             keywords = "Astrodynamics, Orbital maneuvers, Swing-By, Gravity assisted 
                         maneuvers, Orbital motion.",
             abstract = "The goal of this research is to study close approaches between the 
                         Moon and a cloud of particles. The system is formed by two main 
                         bodies (the Earth and the Moon) and it is assumed that they are in 
                         circular orbits. The cloud of particles is moving under their 
                         gravitational attraction. The motion is assumed to be planar for 
                         all the particles and the dynamics given by the patched-conic 
                         approximation is used, which means that a series of two-body 
                         problems are used to generate analytical equations that describe 
                         the problem. The main obejctive is to understand the change of the 
                         orbit of this cloud of particles after the close approach with the 
                         Moon. It is assumed that all the particles that belong to the 
                         cloud have semi-major axis a  da and eccentricity e  de before 
                         the close approach with the Moon, such that the particles are 
                         inside a circle (in the semi-major axis-eccentricity plane) with 
                         center in the center of mass of the cloud. It is desired to known 
                         those values after the close approach.",
  conference-location = "Faro",
      conference-year = "2012",
                 isbn = "9781618040",
                label = "lattes: 6880903376164690 1 GomesPrad:2012:ClApCl",
             language = "en",
           targetfile = "BICA-13.pdf",
        urlaccessdate = "17 jan. 2021"