@PhDThesis{Santana:2015:TrOrAs,
               author = "Santana, Saymon Henrique Santos",
                title = "Transfer{\^e}ncias orbitais para asteroides pr{\'o}ximos {\`a} 
                         Terra",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2015",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2015-09-21",
             keywords = "NEA, orbitas G, swing-by, trajet{\'o}rias de escape, orbit G, 
                         escape trajectories.",
             abstract = "Neste trabalho, apresenta-se um estudo sobre transfer{\^e}ncias 
                         orbitais capazes de promover um encontro entre uma sonda e um 
                         asteroide pr{\'o}ximo da Terra. Partindo de uma {\'o}rbita 
                         terrestre de baixa altitude, as transfer{\^e}ncias consideradas 
                         exploram a din{\^a}mica das {\'o}rbitas peri{\'o}dicas 
                         retr{\'o}gradas ao redor do ponto Lagrangiano de 
                         equil{\'{\i}}brio L1, que s{\~a}o preditas pelo problema 
                         circular restrito dos tr{\^e}s corpos (PCRTC), 
                         Terra-Lua-part{\'{\i}}cula. Tais {\'o}rbitas s{\~a}o 
                         desviadas, de maneira controlada, para realizar um 
                         \emph{swing-by} com a Lua. Desta maneira, consegue-se aumentar a 
                         energia da {\'o}rbita da part{\'{\i}}cula/sonda, 
                         transformando-a numa trajet{\'o}ria de escape do sistema 
                         Terra-Lua, com energia suficiente para alcan{\c{c}}ar asteroides 
                         proximos {\`a} Terra (conhecidos pela sigla em ingl{\^e}s NEA - 
                         \emph{Near Earth Asteroids}). Transfer{\^e}ncias Terra-NEA 
                         paraexplora{\c{c}}{\~a}o e desvio de asteroides tamb{\'e}m 
                         foram estudadas. ABSTRACT: In this work, a study for orbital 
                         transfers able to promote an encounter between a spacecraft and a 
                         Near Earth Objetc is presented. Starting from a low altitude Earth 
                         orbit, the considered transfers exploring the dynamics of the 
                         retrograde periodic orbits around the Lagrangian equilibrium point 
                         L1, which are preticted by the Circular Restricted Three-Body 
                         Problem (CRTBP), Earth-Moon-particle. Such orbits are judiciously 
                         deviated, in order to conduct a swing-by with the Moon. In this 
                         way, is possible to increase the orbital energy of the spacecraft, 
                         turning it into an escape trajectory from the Earth-Moon system, 
                         with enough energy to reach Near Earth Objects. Earth-NEA 
                         transfers to explorations and asteroid deviation also were 
                         studied.",
            committee = "Rosa, Reinaldo Roberto (presidente) and Macau, Elbert Einstein 
                         Nehrer (orientador) and Melo, Cristiano Fiorilo de (orientador) 
                         and Winter, Othon Cabo (orientador) and Carvalho, Solon 
                         Ven{\^a}ncio de and Moraes, Rodolpho Vilhena de and Vieira Neto, 
                         Ernesto",
           copyholder = "SID/SCD",
         englishtitle = "Orbital transfers to near Earth asteroids",
             language = "pt",
                pages = "169",
                  ibi = "8JMKD3MGP3W34P/3K6JQ3H",
                  url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3K6JQ3H",
           targetfile = "publicacao.pdf",
        urlaccessdate = "28 abr. 2024"
}