Stability of the Most Hazardous Mars-Crossers

Details Stability of the Most Hazardous Mars-Crossers Stability of the Most Hazardous Mars-Crossers

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aca....56..413k&link_type=abstract

Acta Astronomica, Vol. 56, pp.413-425

Astronomy and Astrophysics

Astronomy

Minor Planets, Asteroids

Scientific paper

The equations of motion of 4190 Mars Crossers (MCs) were numerically integrated to analyze their all possible close approaches to planets in the next 10^4 years. A sample of asteroids potentially hazardous to Mars was selected and properties of their chaotic motion on larger time scales were determined.
For samples of MCs closely approaching Mars, their mean frequency of close encounters was computed. We also analyzed the presence of mean motion and secular resonances.
The population of asteroids hazardous to Mars was found and the influence of frequent close approaches and resonances on the stability of their trajectories was estimated.
We also estimated the correlation between the frequency of close approaches to Mars and the Lyapunov Time (LT) of these asteroids. Some results concerning the correlation between mean motion/secular resonances and LT were also presented as well as three selected examples of dynamically interesting MCs.

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