Physics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988p%26ss...36..747r&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 36, July 1988, p. 747-752.
Physics
3
Interplanetary Dust, Jupiter (Planet), Orbit Perturbation, Poynting-Robertson Effect, Terrestrial Planets, Drag, Encke Comet, Solar Orbits
Scientific paper
The method of isolating the effects of planetary perturbations by observing the change in the Wyatt-Whipple (1950) constant W (which relates the orbital semimajor axis and eccentricity) is shown to provide a means of measuring the effects of planetary perturbations on particles undergoing Poynting-Robertson (P-R) drag. The results indicate that, at least for particles in highly eccentric orbits such as those of cometary origin, the inner planets do not signficantly reduce the infall rate of dust due to P-R drag and cannot overcome the shortening of the P-R lifetime due to the effect of Jupiter. It is suggested that the alignment of the symmetry plane of the zodiacal dust with the orbital planes of Venus and Mars was probably not caused by the inner planets.
Gustafson Bo A. S.
Misconi Nebil Y.
Rusk Edwin T.
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