Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.331..126a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 331, Issue 1, pp. 126-132.
Astronomy and Astrophysics
Astronomy
17
Comets: Individual: 7P/Pons-Winnecke Meteors, Meteoroids, Solar System: General, Comets: Individual: 7P/Pons-Winnecke, Meteors, Meteoroids, Solar System: General
Scientific paper
Numerical integrations are used to show that the main contribution to the outburst observed in the June Bootid meteor shower in 1998 was a subset of meteoroids released from the parent comet, 7P/Pons-Winnecke, at its 1825 return. A substantial part of the June Bootid stream is in 2:1 resonance with Jupiter. This inhibits chaotic motion, allowing structures in the stream to remain compact enough over centuries that meteor outbursts can still be produced. Circumstances of ejection in 1825 are calculated that exactly result in orbits capable of producing meteors at the observed time in 1998. Required ejection velocities are 10-20ms-1.
Asher David J.
Emel'Yanenko Vacheslav Vasilievitch
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