Possible Ursid Outburst on December 22, 2000

Details Possible Ursid Outburst on December 22, 2000 Possible Ursid Outburst on December 22, 2000

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jimo...28..221j&link_type=abstract

WGN, Journal of the International Meteor Organization, vol. 28, no. 6, p. 221-226

Physics

2

Scientific paper

The Ursid shower has broad Filament-type outbursts around the perihelion passage of parent 8P/Tuttle, but also isolated narrow outbursts at aphelion. We calculated Tuttle's dust trail encounters in the same way as for the Leonid showers. We discovered that it takes 6 centuries to change the orbit enough to bring the meteoroids to Earth's orbit. During that time, the meteoroids and comet separate in mean anomaly by about 6 years, explaining the usual aphelion accurrences. Our study predicts enhanced activity on December 22, 2000, at around 7h29m UT.

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