Mathematics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..661w&link_type=abstract
In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 661-665 (SEE N93-19113 06-90)
Mathematics
6
Comets, Leonid Meteoroids, Mathematical Models, Orbit Perturbation, Planetary Orbits, Gravitational Effects, Radiation Pressure, Space Observations (From Earth)
Scientific paper
It is well known that some meteor showers display a very high level of activity at certain times, the most famous being the Leonid shower with very spectacular displays at roughly 33 year intervals. This period being also the period of the parent comet of the stream, Comet Tempel-Tuttle. An investigation of the geometry of the comet and the Earth at the time of each high activity occurrence by Yeomans suggests that most of the meteoroids are found outside the cometary orbit and lagging the comet. The formation process of such a stream by numerically integrating the orbits of dust particles ejected from the comet and moving under the influence of gravity and radiation pressure are simulated. The intersection of these dust particles with the Earth is also considered and it is concluded that about 12 percent of the ejected particles may be observed and that of those observable, 63 percent will be outside the cometary orbit and behind the comet.
Williams Iwan P.
Wu Zidian
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