author = "Venditti, Flaviane C. F. and Marchi, Luis Ot{\'a}vio and Misra, 
                         Arun K. and Merguizo Sanchez, Diogo and Prado, Antonio Fernando 
                         Bertachini de Almeida",
          affiliation = "{University of Central Florida} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {McGill University} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Dynamics of tethered asteroid systems to support planetary 
              journal = "European Physical Journal Special Topics",
                 year = "2020",
               volume = "229",
               number = "8",
                pages = "1463--1477",
                month = "May",
             abstract = "Every year near-Earth object (NEO) surveys discover hundreds of 
                         new asteroids, including the potentially hazardous asteroids 
                         (PHA). The possibility of impact with the Earth is one of the main 
                         motivations to track and study these objects. This paper presents 
                         a tether assisted methodology to deflect a PHA by connecting a 
                         smaller asteroid, altering the center of mass of the system, and 
                         consequently, moving the PHA to a safer orbit. Some of the 
                         advantages of this method are that it does not result in 
                         fragmentation, which could lead to another problem, and also the 
                         flexibility to change the configuration of the system to optimize 
                         the deflection according to the warning time. The dynamics of the 
                         PHA-tether-asteroid system is analyzed, and the amount of orbit 
                         change is determined for several initial conditions. Only motion 
                         in the plane of the orbit of the PHA around the Sun is considered, 
                         thus the PHA chosen for the simulations has low orbit inclination. 
                         Analysis of the dynamics of the system shows that the method is 
                         feasible for planetary defense.",
                  doi = "10.1140/epjst/e2020-900183-y",
                  url = "http://dx.doi.org/10.1140/epjst/e2020-900183-y",
                 issn = "1951-6355",
             language = "en",
           targetfile = "venditti_dynamics.pdf",
        urlaccessdate = "21 jan. 2021"