Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cem..conf..208s&link_type=abstract
Catastrophic Events and Mass Extinctions: Impacts and Beyond, p. 208
Astronomy and Astrophysics
Astrophysics
Asteroids, Collisions, Earth Orbits, Three Body Problem, Eccentricity, Perihelions, Sun
Scientific paper
The orbital evolution of fictitious high inclination main belt asteroids with movement corresponding to the conditions of the Tisserand invariant for C = C(Ll) in the restricted three body problem has been investigated. The obtained results showed that the bodies with inclinations within 40-80 deg and 100-140 deg and eccentricities within 0-0.4 are dynamically stable at least during the 200,000 years investigated period, and periodically change their inclinations, eccentricities and perihelion distances. In some time, they can reach the vicinity of the Sun and during their orbital evolution they cross the Earth orbits many times. The bodies belong to the potential candidates dangerous for the Earth in that they may bring about catastrophic events on its surface. The discoveries of some tents retrograde sungrazers with LASCO coronographs of the SOHO spacecraft and MMC and SOLWIN space equipments lead to the idea that bodies with the studied orbital parameters exist, whereby majority of their revolution around the Sun occur in the space outside the Mars orbit.
Pittich Eduard M.
Solovaya Nina A.
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