[U-06_28PO1] New Progress toward the Understanding of Small Solar System Bodies

[U06-P07] Hayabusa 2/SCI: calibration impact experiments

*Toshihiko KADONO¹, Masahiko ARAKAWA², Sayaka TSUJIDO², Minami YASUI³, Sunao HASEGAWA⁴, Kosuke KUROSAWA⁵, Kei SHIRAI⁴, Masahiko HAYAKAWA⁴, Chisato OKAMOTO⁴, Takanao SAIKI⁴, Hiroshi IMAMURA⁴, Hajime YANO⁴, Satoru NAKAZAWA⁴, Kazunori OGAWA⁴, Yuichi IIJIMA⁴, Naru HIRATA⁶, Yasuhiko TAKAGI⁷, Koji WADA⁵ (1.University of Occupational and Environmental Health, 2.Graduate School of Science, Kobe University, 3.Organization of Advanced Science and Technology, Kobe University, 4.Japan Aerospace Exploration Agency, 5.Planetary Exploration Research Center, Chiba Institute of Technology, 6.Dep. of Computer Science and Engineering, Univ. of Aizu, 7.Aichi Toho University)

Keywords:Hayabusa 2, Small Carryon Impactor, Impact experiments

SCI (Small Carryon Impactor" boarded on "Hayabusa 2" is a hollow Cu sphere with a mass of 15 kg, a diameter of 15 cm, which will impact a surface of asteroid 1999JU3. To estimate the conditions of the surface of the asteroid, such as composition and structure, we should investigate the results of the impact experiments with similar projectiles and various targets. We carried out impact experiments with gypsum and basalt targets and small hollow projectiles accelerated by a two-state light-gas gun at ISAS/JAXA, and sand targets and real scale projectiles at Kamioka. We report a summary of the results of these experiments.