Physics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.345...49t&link_type=abstract
Nature (ISSN 0028-0836), vol. 345, May 3, 1990, p. 49-51.
Physics
45
Chaos, Comets, Neptune (Planet), Orbital Mechanics, Solar Orbits, Solar System, Eccentricity, Equations Of Motion, Oort Cloud, Orbit Perturbation, Uranus (Planet), Comets, Chaos, Motion, Flux, Celestial Mechanics, Dynamics, Orbits, Numerical Methods, Cometesimals, Timescale, Frequency, Simulations, Perturbations, Eccentricity, Neptune Crossers, Trajectories
Scientific paper
Previous calculations using a heliocentric frame have shown that a scattered disk of cometesimals beyond Neptune develops chaotic motions with divergence timescales less than 1 Myr. Here, improved numerical simulations using a baryocentric system and thus including the additional frequencies associated with motions of the sun are described. Because the onset of chaotic motion is characterized by the appearance of broadband noise, the inclusion of these additional perturbations should increase the likelihood of stochastic behavior and thus the chaotic zone should be larger. The results indicate that comets in a low-eccentricity primordial disk beyond Neptune can exhibit chaotic motions which lead to interesting consequences for the dynamics of comets.
Smoluchowski Roman
Torbett Michael V.
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