Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..257j&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, July 15, 1986, p. 257-267. NSERC-supported researc
Astronomy and Astrophysics
Astronomy
17
Gravitational Effects, Meteoroid Showers, Orbit Perturbation, Taurid Meteoroids, Encke Comet, Evolution (Development), Jupiter (Planet), Orbit Calculation
Scientific paper
Calculations of the development of a hypothetical meteor stream with an orbit similar to that of comet P/Encke under the action of purely gravitational perturbations by Jupiter are described. It is found that if the initial orbit is well defined and the spreading resulting from the ejection velocities of the meteoroids from the comet are ignored, the time-scale needed to account for the present duration of the Taurid meteor shower and the difference in tilts between the northern and southern branches of the shower is of the order of 0.1 Myr. Comparison of observations with P/Encke suggests that the inclusion of the initial distribution of orbits would lead to a more comfortable fit of theory to observation. Examination of the motion of the orbital tilt indicates any separation of the Apollo asteroid Hephaistos and P/Encke must have occurred in the remote past.
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