Dynamical evolution and collisions of asteroids with the earth

Author(s): Rudolf Dvorak, Florian Freistetter
Abstract: We study the dynamical evolution of asteroids which are a potential danger for collisions with the Earth. The work is undertaken on basis of a simplified model of the planetary system including the perturbations from Venus to Saturn. For a whole grid of initial conditions (0.7 = a = 1.45 and 0.1 = e = 0.8) we integrated the equations of motion with the Lie-series integration for 0.5 Myrs for 720 fictitious objects. The analysis of the data provided the following results: (a) the dynamical evolution for such objects which are initially in four different groups namely Subatens, Atens, Apollos and Amors (b) the flow between these groups and (c) the individual collision probabilities. Œ 2001 Elsevier Science Ltd.
Organisation(s): Department of Astrophysics
External organisation(s): Friedrich-Schiller-Universität Jena
Journal: Planetary and Space Science
Volume: 49
Pages: 803-809
No. of pages: 7
ISSN: 0032-0633
Publication date: 2001
Peer reviewed: Yes
Austrian Fields of Science 2012: 103003 Astronomy
Portal url: https://ucris.univie.ac.at/portal/en/publications/dynamical-evolution-and-collisions-of-asteroids-with-the-earth(a6be9852-aaeb-4acf-b38e-24e34fbddfe4).html