オリオン座流星群の2006年突発出現の起源

佐藤 幹哉; 渡部 潤一

doi:10.14909/jsps.2007f.0.4.0

Abstracts 2007 Fall meeting of the Japanese Society for Planetary Sciences

Session ID : 104

DOI https://doi.org/10.14909/jsps.2007f.0.4.0

Conference information

Host: The Japanese Society for Planetary Sciences: Local Organizing Committee for 2007 Fall Meeting

Oral Session 1: Meteors and Comets
Sep. 25, 9:00-10:28

Origin of the 2006 Orionid Outburst

*Mikiya Sato, Jun-Ichi Watanabe

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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

The Orionid outburst observed in 2006 resulted in strong activity, continuing for about four days. We have found that this activity was caused by the dust trails formed by meteoroids ejected from 1P/Halley in -1265, -1197 and -910. The orbital period of these meteoroids had six times the Jovian orbital period. Therefore, the mean motion resonance with Jupiter is thought to have forced these meteoroids move close to intersect the Earth's orbit.

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