Secular Dynamics of Asteroids in the Inner Solar System

Details Secular Dynamics of Asteroids in the Inner Solar System Secular Dynamics of Asteroids in the Inner Solar System

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cemda..69..133m&link_type=abstract

Celestial Mechanics and Dynamical Astronomy, v. 69, Issue 1/2, p. 133-147 (1997).

Astronomy and Astrophysics

Astronomy

1

Secular Resonances, Near-Earth Asteroids, Close Approaches, Secular Resonances, Near-Earth Asteroids, Close Approaches

Scientific paper

In the last three years we have carried out numerical and semi-analytical studies on the secular dynamical mechanisms in the region (semimajor axis a < 2 AU) where the NEA orbits evolve. Our numerical integrations (over a time span of a few Myr) have shown that: (i) the linear secular resonances with both the inner and the outer planets may play an important role in the dynamical evolution of NEAs; (ii) the apsidal secular resonance with Mars could provide an important dynamical transport mechanism by which asteroids in the Mars-crossing region eventually achieve Earth-crossing orbits; (iii) in this region, due to the interaction with the terrestrial planets, the Kozai resonance can occur at small inclinations, with the argument of perihelion ω librating around 0° or 180°, providing a temporary protection mechanism against close approaches to the planets.

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