[K-5] Small Body Explorations - Hayabusa2 and MMX

[2022-k-20] Crack Orientation of Boulders on Ryugu: Meridional Preference and Exfoliation

*Sho Sasaki¹, Shiho Kanda¹, Hiroshi Kikuchi², Tatsuhiro Michikami³, Tomokatsu Morota⁴, Chikatoshi Honda⁵, Hideaki Miyamoto⁴, Ryodo Henmi⁴, Seiji Suguta⁴, Eri Tatsumi⁴, Masanori Kanamaru², Seiichiro Watanabe⁶, Noriyuki Namiki⁷, Patrik Michel⁸, Masatoshi Hirabayashi⁹, Naru Hirata⁵, Tomoki Nakamura¹⁰, Takaaki Noguchi¹¹, Takahiro Hiroi¹², Naoya Sakatani¹³ (1. Osaka University, Department of Earth and Space Science, 2. JAXA, ISAS, 3. Kindai University, 4. University of Tokyo, 5. University of Aizu, 6. Nagoya University , 7. National Astronomical Observatory of Japan, 8. Observatoire de la Cote d'Azur, 9. Auburn University, 10. Tohoku University, 11. Kyoto University, 12. Brown University, 13. Rikkyo University)

Keywords:Ryugu, crack orientation, thermal stress, boulder exfoliation, meridional crack