Thermal Properties of Boulders on C-Type Asteroid 162173 Ryugu Observed by Hayabusa2TIR During Low Altitude Operations

HAYABUSA2 TIR DURING LOW ALTITUDE OPERATIONS. A. Ohsugi, N. Sakatani, Y. Shimaki, T. Arai, H. Senshu, T. Kouyama, H. Demura, T. Sekiguchi, S. Tanaka, and T. Okada, Graduate School of Science, the University of Tokyo, Japan, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan, Rikkyo University, Tokyo, Japan, Ashikaga University, Japan, Chiba Institute of Technology, Narashino, Japan, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan, University of Aizu, Aizu-Wakamatsu, Japan, Hokkaido University of Education, Asahikawa, Japan.