[P-PS03] Small Solar System Bodies: Latest results and new perspectives on the Solar System evolution

Wed. May 25, 2022 3:30 PM - 5:00 PM Exhibition Hall Special Setting (1) (Exhibition Hall 8, Makuhari Messe)

convener:Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), convener:Daisuke Kuroda(Kyoto University), Arika Higuchi(University of Occupational and Environmental Health, Japan), Chairperson:Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Arika Higuchi(University of Occupational and Environmental Health, Japan)

Small Solar System bodies including asteroids, comets, satellites, and IDPs preserve clues for understanding the origin and evolution of the Solar System and investigating the sources of building blocks of life. Many discoveries have been made by ground-based and space-borne observations and direct explorations using spacecrafts. Evident and precise data on solar system evolution have been obtained by analyses of extraterrestrial materials such as meteorites, IDPs, and samples returned by space missions. New perspectives are expected by the collaboration of these results with theoretical and experimental studies. In this session. new results of theoretical, experimental and observational studies on small Solar System bodies are focused, as well as the latest information by Hayabusa2 and OSIRS-REx missions. Scientific expectations are also discussed for the high sensitive large-area observatories such as LSST and JWST and for the future planetary missions like Hayabusa2-extended, MMX, Destiny+, Hera, and Comet Interceptor. Missions to unexplored bodies like Lucy to Jupiter Trojans and Psyche to a M-type asteroid, and the planetary defense to avoid from collision of asteroids to Earth are also within the scope of this session.

+Add all to schedule

3:30 PM - 4:00 PM

[PPS03-01] Hayabusa2 mission summary: Proximity observations and returned samples tell us about the history of Ryugu

★Invited Papers

*Sei-ichiro WATANABE¹, Riona Yamada¹, Seiji Sugita², Kohei Kitazato³, Tatsuaki Okada⁴, Noriyuki Namiki⁵, Shogo Tachibana^2,4, Masahiko Arakawa⁶, Masanao Abe⁴, Satoshi Tanaka⁴, Hayabusa2 Science Team (1.Nagoya University, 2.University of Tokyo, 3.University of Aizu, 4.JAXA/ISAS, 5.National Astronomical Observatory of Japan, 6.Kobe University)

4:00 PM - 4:15 PM

[PPS03-02] Resurfacing rate based on the crater distribution on Ryugu: Implication for Ryugu’s sample ages

*Naofumi Takaki¹, Yuichiro Cho¹, Tomokatsu Morota^1,2, ERI TATSUMI^1,3, Rie Honda⁴, Shingo Kameda⁵, Yasuhiro Yokota⁶, Naoya Sakatani⁵, Toru Kouyama⁷, Masahiko Hayakawa⁶, Moe Matsuoka¹⁴, Manabu Yamada⁸, Chikatoshi Honda⁹, Hidehiko Suzuki¹⁰, Kazuo Yoshioka¹, Kazunori Ogawa^11,12, Hirotaka Sawada⁶, Patrick Michel¹³, Seiji Sugita^1,8 (1.The University of Tokyo, 2.Naogya University, 3.Instituto de Astrofisica de Canarias (IAC), 4.Kochi University, 5.Rikkyo University, 6.Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 7.National Institute of Advanced Industrial Science and Technology, 8.Planetary Exploration Research Center, Chiba Institute of Technology, 9.University of Aizu, 10.Meiji University, 11.Kobe University, 12.JAXA Space Exploration Center (JSEC), 13.Universite Cote d'Azur, Observatoire de la Cote d'Azur, 14.LESIA, Observatoire de Paris)

4:15 PM - 4:30 PM

[PPS03-03] TEMPERATURE DISTRIBUTIONS AND THERMAL PROPERTIES OF BOULDERS ON C-TYPE ASTEROID 162173 RYUGU OBSERVED IN LOW ALTITUDE OPERATION OF THE ASTEROID EXPLORER HAYABUSA2

*Ayumu Ohsugi¹, Naoya Sakatani³, Yuri Shimaki², Masanori Kanamaru², Takuya Takuya ², Hiroki Senshu⁴, Takehiko Arai⁵, Hirohide Demura⁶, Toru Kouyama⁷, Tomohiko Sekiguchi⁸, Satoshi Tanaka^1,2, Tatsuaki Okada^1,2 (1.The University of Tokyo, 2.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3.Rikkyo University, 4.Chiba Institute of Technology, 5.Maebashi Institute of Technology, 6.University of Aizu, 7.National Institute of Advanced Industrial Science and Technology, 8.Hokkaido University of Education)

4:30 PM - 4:45 PM

[PPS03-04] Boulders in the Tlanuwa Regio of Bennu: A View from CNN-based Automatic Rock Identification

*Yuta Shimizu¹, Ryodo Hemmi¹, Hideaki Miyamoto¹ (1.University of Tokyo)

4:45 PM - 5:00 PM

[PPS03-05] Distribution of fractures on boulders on (101955) Bennu and their implication for asteroid surface evolutionary processes.

*Marco Delbo¹, Kevin John Walsh², Christophe Matonti³, Justin Wikerson⁴, Maurizio Pajola⁵, Manar Al Asad⁶, Chrysa Avdellidou¹, Ronald Luis Ballouz⁷, Carina Bennett⁷, Harold C. Connolly Jr.^7,8, Daniella DellaGiustina⁷, Dathon R. Golish⁷, Jamie L. Molaro⁹, Stephen R. Schwartz⁷, Dante S. Lauretta⁷ (1.CNRS Observatoire de la Côte d'Azur, 2.Southwest Research Institute, Boulder, Colorado, USA, 3.Université Côte d'Azur, CNRS, Observatoire de la Côte d’Azur, Gèoazur, Sophia-Antipolis Valbonne, France, 4.J. Mike Walker ’66 Department of Mechanical Engineering, Texas A&M University, College Station, Texas, USA, 5.Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Padova, Italy, 6.Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada, 7.Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, USA, 8.Department of Geology, School of Earth & Environment, Rowan University, Glassboro, New Jersey, USA, 9.Planetary Science Institute, Tucson, Arizona, USA)

Session information