Planetary perturbations on the Geminid meteor stream

Details Planetary perturbations on the Geminid meteor stream Planetary perturbations on the Geminid meteor stream

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..533h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Nov. 15, 1985, p. 533-538. SERC-supported research

Astronomy and Astrophysics

Astronomy

25

Geminid Meteoroids, Gravitational Effects, Meteoroid Showers, Orbit Perturbation, Earth (Planet), Orbital Elements, Planetary Orbits

Scientific paper

The authors have shown that asteroid 3200 and the Geminid stream are experiencing a very interesting dynamical phase at present with the possibility of close encounters with the Earth and Venus. However, prior to the 14th century it went through a much more quiescent phase; with no major impulsive perturbations only secular perturbations from Jupiter, lasting about 3000 yr. During this phase no close approaches to the Earth were made and it seems very unlikely that the fireballs of the 11th century were therefore associated with the Geminid stream. The authors have also confirmed that in general planetary perturbations are not causing any sudden large changes in the major orbital parameters of the stream so that following the evolution of one body does give, even over long time periods, a good insight into the stream behaviour.

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