The effect of gravitational maneuver at the approach of an asteroid to the earth

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Abstract

The possibility of removing a dangerous asteroid from collisions with the Earth using the kinetic method in combination with the effect of gravitational maneuver to reduce the required change in the asteroid’s velocity is discussed. The asteroids Apophis, 2000 SG344, 2008 UB7, 2006 QV89, 2008 EX5 are considered as examples. For these asteroids, we found possible collisions (including previously unknown ones) and approaches to the Earth preceding these collisions. It can be noted that in many cases the approaches on the trajectories leading to collisions are closer than on the nominal trajectories. In the case of close approaches, the effect of the gravitational maneuver can reach several orders of magnitude. The corresponding estimates are given. With the advance impact on a dangerous object by the kinetic method, in many cases, in principle, it is possible to withdraw the asteroid from the impact with the Earth using the capabilities of modern space technology. Estimates of the probability of collision of a number of dangerous asteroids with the Earth, the Moon and planets of the Solar system, obtained by numerical modeling using the Monte Carlo method, are also given. In most cases, only collisions with the Earth and Moon occur for selected asteroids. In addition, the probabilities of rendezvous with the Moon and planets at 10 and 100 of their radii are estimated.

Original languageEnglish
Title of host publicationXLIV Academic Space Conference
Subtitle of host publicationDedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists - Pioneers of Space Exploration
EditorsEvgeny A. Mikrin, Dmitry O. Rogozin, Anatoly A. Aleksandrov, Victor A. Sadovnichy, Igor B. Fedorov, Vera I. Mayorova
PublisherAmerican Institute of Physics
ISBN (Electronic)9780735440609
DOIs
StatePublished - 22 Feb 2021
Event44th Academic Space Conference: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists - Pioneers of Space Exploration - Moscow, Russian Federation
Duration: 28 Jan 202031 Jan 2020

Publication series

NameAIP Conference Proceedings
Volume2318
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference44th Academic Space Conference: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists - Pioneers of Space Exploration
CountryRussian Federation
CityMoscow
Period28/01/2031/01/20

Scopus subject areas

  • Physics and Astronomy(all)

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