JpGU-AGU Joint Meeting 2017

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[EE] Poster

P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS02] [EE] Small Bodies: Exploration of the Asteroid Belt and the Solar System at Large

Mon. May 22, 2017 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall HALL7)

convener:eleonora ammannito(University of California Los Angeles), Taishi Nakamoto(Tokyo Institute of Technology), Masanao Abe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Christopher T Russell(University of California Los Angeles), Sei-ichiro WATANABE(Division of Earth and Planetary Sciences, Graduate School of Science, Nagoya University)

[PPS02-P09] 4-D dust trail calculations of 1998 Bootid outburst and 1972 Giacobinid absence

*Isao Sato1, Shinsuke Abe1 (1.Nihon University)

Keywords:Bootid, Giacobinid, dust trail theory

June Bootid out bursted in 1998, but its mechanism has not been known well. We made the first 4-D dust trail calculation for the meteor shower and revealed that several duat trails yielded in the 19th century close encounterd to the earth to show the meteors. The minimum velocity ejected from 7P/Pons-Winnecke is 10 m/s, and the peak time and the arc of the activity can be explained clearly.
Also, the 4-D duat trail calculation revealed the mechanism of 1972 Giacobinid. Giacobinid was expected to show the activity in 1972 but almost no activity. This is because that the minimum ejection velocity from the parent comet was 60m/s which is over the sublimation velocity of H2O.