Proper Elements for Earth-Crossing Asteroids

Details Proper Elements for Earth-Crossing Asteroids Proper Elements for Earth-Crossing Asteroids

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icar..152...58g&link_type=abstract

Icarus, Volume 152, Issue 1, pp. 58-69 (2001).

Statistics

Computation

10

Scientific paper

Proper elements for 987 known near-Earth asteroids (NEAs) have been computed using a generalized averaging principle, valid also for planet-crossing orbits. This allows us to assess the maximum and minimum eccentricities and inclinations resulting from secular perturbations, to determine which planetary orbits can be crossed, and to find the encounter conditions, which can also be used to search for parent bodies of meteor streams. Proper frequencies for these asteroids have also been computed; it is then possible to draw a map of the NEAs affected by the main secular resonances. This paper describes the methods used in this computation, discusses the main qualitative properties of the results, and announces the availability of the proper elements online.

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