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Solar System Research

, Volume 46, Issue 4, pp 291–300 | Cite as

Impact trajectories of the asteroid Apophis in the 21st century

  • L. L. Sokolov
  • A. A. Bashakov
  • T. P. Borisova
  • N. A. Petrov
  • N. P. Pitjev
  • V. S. Shaidulin
Article

Abstract

The asteroid Apophis is one of the most hazardous near-Earth asteroids. As a result of the scattering of Apophis’ potential trajectories after its close approach in 2029, and its possible approach in 2036, there are many dangerous trajectories including impact trajectories after 2036. The purpose of this study is to identify and investigate these trajectories. We use the Everhart integrator; the DE405, DE423, and EPM2008 ephemerides; and two sets of initial data for Apophis (those collected by NASA in 2006 and by the IAA in 2010). More than 50 possible encounters in this century are presented, including 13 encounters between 2036 and 2050. The minimum geocentric distances obtained using a different ephemeris and initial conditions differ little between themselves. Analogous results in (Yeomans et al., 2009) are consistent with our results.

Keywords

Solar System Research Semimajor Axis Earth Asteroid Hazardous Object Planetary Ephemeris 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • L. L. Sokolov
    • 1
  • A. A. Bashakov
    • 1
  • T. P. Borisova
    • 1
  • N. A. Petrov
    • 1
  • N. P. Pitjev
    • 1
  • V. S. Shaidulin
    • 1
  1. 1.St. Petersburg State UniversitySt. PetersburgRussia

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