(meteorobs) showers shifting through time

[Trenary, Carlos]

Long ago I was taught that the Leonid meteor shower shifts in time and occurs about one day later for every 71 years that passes. But is it correct that not all showers gradually shift according to such a pattern? Do all showers occur at the same time according to the tropical year, or do some have a different rate of shift?



Carlos Trenary
Carlos.trenary at vanderbilt.edu<mailto:Carlos.trenary at vanderbilt.edu>
Carlos.trenary at gmail.com<mailto:Carlos.trenary at gmail.com>
Nashville Tennessee, USA

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