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Meteoric Activities of the Last Millennium
Authors:Sang-hyeon Ahn
Institution:(1) Korea Astronomy and Space Science Institute, Korea
Abstract:We have analyzed the meteor records in the chronicles of the east Asian countries, especially the Korean records. Our results show that the seasonal variation of sporadic meteors has persisted at least for the last two millennia. We also observed the prominent showers such as the Perseids and the Leonids, which are formed by Halley-type comets. We obtained the regression rate of nodal points for the Leonids to be approximately 1.52± 0.04 days per century.
Keywords:historical meteors  ancient meteor showers  meteoroids
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