Japan Geoscience Union Meeting 2014

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Oral

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[U-06_28AM1] New Progress toward the Understanding of Small Solar System Bodies

Mon. Apr 28, 2014 9:00 AM - 10:45 AM 503 (5F)

Convener:*Masahiko Arakawa(Graduate School of Science, Kobe University), Taishi Nakamoto(Tokyo Institute of Technology), Sei-ichiro WATANABE(Division of Earth and Planetary Sciences, Graduate School of Science, Nagoya University), Masanao Abe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), MASATERU ISHIGURO(Department of Physics and Astronomy, Seoul National University), Chair:Masahiko Arakawa(Graduate School of Science, Kobe University)

10:30 AM - 10:45 AM

[U06-P06_PG] How to detect a small crater produced by Small Carry-on Impactor (SCI) using Thermal InfraRed Camera (TIR)

3-min talk in an oral session

*Koji WADA1, Akiko NAKAMURA2, Kosuke KUROSAWA1, SCI, Team 3, Team, TIR 3 (1.PERC/Chitech, 2.Department of Earth and Planetary Sciences, Kobe University, 3.Hayabusa-2 Project)

Keywords:Hayabusa-2, Impact, SCI, TIR, cater thermal model, asteroid

In Hayabusa-2 mission, a crater will be formed on the surface of a C-type asteroid 1999JU3 using Small Carry-on Impactor (SCI) and the crater should be quickly detected from the mother ship. The detection, however, will become difficult when the crater is very small with a diameter of only 30 cm, near to the resolution limit of on-board cameras. On the other hand, Thermal InfraRed Camera (TIR) mounted on Hayabusa-2 has a possibility to detect such a small crater even if the crater size is sub-pixel of TIR resolution, because the temperature on the surface of a small crater is expected to be different from that around the crater. We, therefore, have started examination about the possibility and method to detect a SCI-formed small crater using TIR. In this presentation, we introduce the basic idea and the preliminary results of our modeling.