04/novembro/22 – Deflection of potentially dangerous asteroids using the deflection technique by kinetic impact and gravitational perturbations (Bruno Chagas, GDOP/UNESP)

Within the work to be developed here, we intend to evaluate in more detail the possibility of deflecting the orbit of the asteroid 101955 Bennu by applying variations in its velocity, simulating the kinetic impact technique, at different positions throughout its orbital period and measuring the effects of close encounters with planet Earth. We will see that, over a relatively long period of time (100 years), the asteroid has several close encounters with the planet. We also address the kinetic impact deflection technique in a scenario where we have a short time to deflect an asteroid that will collide with Earth. For this, we also used a maneuver similar to a powered gravity-assist maneuver with Earth in a pre-impact pass to alter the trajectory of the asteroid to avoid collision.