date: 2010 July 28 (Wed) 15:00-16:00
room: Kobe University, Science and Technology Research Building #4-809
speaker: Yoshiaki Ishihara (NAOJ)
title: Ground Observation of HAYABUSA Re-entry
abstract: After 7 years challenging cruise in the solar system, the HAYABUSA (MUSES-C) came back to the Earth and did re-entry into sky over Woomera Prohibited Area (WPA), Australia at 13th June 2010. In order to obtain precise trajectory information to ensure quick procedure of JAXA’s SRC resumption team, we observed the HAYABUSA SRC re-entry at WPA. Second purpose of our ground-based observation is scientific observations (e.g., optical tracking, spectroscopy, infrasound/seismic, etc…) for meteor sciences. Because of the direct re-entry from interplanetary transfer orbit, the HAYABUSA SRC initial re-entry velocity is about 12 km/s. So, the re-entry is a good analogue for meteorite falls. In this talk, I'll briefly introduce backgrounds of our ground-based observations, and then introduce actual observation and preliminary results of infrasound-seismic observation part of our ground-based observations.