Computer Science
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...37...96w&link_type=abstract
Icarus, vol. 37, Jan. 1979, p. 96-112.
Computer Science
36
Apollo Asteroids, Asteroids, Comets, Population Theory, Steady State, Cratering, Fragmentation, Lunar Craters, Orbit Calculation, Perihelions, Orbits, Apollo Asteroids, Amor Asteroids, Asteroids, Encke, Comet, Observations, Scaling Law, Comets
Scientific paper
The steady-state orbital distribution of Apollo-Amor objects is calculated for a number of possible sources, including minor planets near the inner edge of the asteroid belt, cometary orbits similar to that of comet Encke, and hypothetical extinct cometary orbits with perihelia greater than Encke's. The results indicate that in all cases except one, the steady-state distributions are similar for all the sources and predict Amor/Apollo ratios of 1.5:3, which are lower than those predicted by not taking into account the effects of the nu-6 secular resonance. The absolute number of Apollo-Amor objects observed is found to require an injection rate of about 15 objects every million years, which is easily achieved if the present existence of Encke is assumed to be a reasonably probable event and if Encke becomes an Apollo object about 1 km in diameter after exhaustion of its volatile material. A dominant cometary component is suggested.
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