Dynamical evolution and collisions of asteroids with the earth

Autor(en)

Rudolf Dvorak, Florian Freistetter

Abstrakt

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. Π2001 Elsevier Science Ltd.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Friedrich-Schiller-Universität Jena

Journal

Planetary and Space Science

Band

49

Seiten

803-809

Anzahl der Seiten

7

ISSN

0032-0633

Publikationsdatum

2001

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/dynamical-evolution-and-collisions-of-asteroids-with-the-earth(a6be9852-aaeb-4acf-b38e-24e34fbddfe4).html