@Article{ChagasPradWint:2022:DeAsCo,
               author = "Chagas, Bruno S. and Prado, Antonio Fernando Bertachini de Almeida 
                         and Winter, Othon Cabo",
          affiliation = "{Universidade Estadual Paulista (UNESP)} and {Instituto Nacional 
                         de Pesquisas Espaciais (INPE)} and {Universidade Estadual Paulista 
                         (UNESP)}",
                title = "Deflecting an Asteroid on a Collision Course with Earth Using a 
                         Powered Swing-By Maneuver",
              journal = "Symmetry",
                 year = "2022",
               volume = "14",
               number = "8",
                pages = "e1658",
                month = "Aug.",
             keywords = "asteroid collision, astrodynamics, deflect asteroids, planetary 
                         defense, swing by.",
             abstract = "The deflection of potentially dangerous asteroids has been treated 
                         with great intensity and has gained more and more attention in 
                         scientific research. Different techniques are developed over the 
                         years. Among these techniques, we found the kinetic impact 
                         deflection technique to be the most viable at the moment. In this 
                         work we address the kinetic impact deflection technique, but in a 
                         scenario where we have a short time to deflect an asteroid that 
                         will collide with Earth. For this, we also use a maneuver similar 
                         to a powered gravity-assisted maneuver with Earth in a previous 
                         passage to change the trajectory of the asteroid to avoid the 
                         collision. We apply this technique in three scenarios: (i) impulse 
                         before the close encounter, (ii) impulse during the close 
                         encounter, and (iii) impulse after the close encounter. We observe 
                         that some trajectories are symmetric with respect to the line 
                         SunEarth, and others are asymmetric. We show that, using this 
                         technique, it is possible to change the trajectory of the 
                         asteroid, even in a short period, to avoid the collision without 
                         using a large variation of velocity in the orbit of the 
                         asteroid.",
                  doi = "10.3390/sym14081658",
                  url = "http://dx.doi.org/10.3390/sym14081658",
                 issn = "2073-8994",
             language = "en",
           targetfile = "symmetry-14-01658.pdf",
        urlaccessdate = "30 abr. 2024"
}