Japan Geoscience Union Meeting 2024

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[E] Oral

P (Space and Planetary Sciences ) » P-PS Planetary Sciences

[P-PS03] Small Solar System Bodies: New perspectives on the origin and evolution of the Solar System

Tue. May 28, 2024 9:00 AM - 10:15 AM 101 (International Conference Hall, Makuhari Messe)

convener:Ryota Fukai(Japan Aerospace Exploration Agency), Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Sota Arakawa(Japan Agency for Marine-Earth Science and Technology), Fumi Yoshida(University of Occupational and Environmental Health, Japan), Chairperson:Ryota Fukai(Japan Aerospace Exploration Agency)

Small Solar System bodies, including asteroids, comets, satellites, and interplanetary dust particles (IDPs), preserve clues for the understanding of the origin and evolution of the Solar System and the investigation of the sources of the building blocks of life. Many discoveries have been made in recent years through ground-based and space-borne observations and in situ explorations using spacecraft. Evident and precise data on the origin and evolution of the Solar System have been obtained by analyses of extraterrestrial materials such as meteorites, IDPs, and the samples returned by space missions. New insights are expected by the collaboration of these data-based 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 results of remote sensing and sample analysis by OSIRS-REx and DART missions. Scientific expectations are also discussed for the high-sensitive large-area observatories such as LSST and JWST and for future planetary missions like Hayabusa2#, MMX, Destiny+, Hera, Comet Interceptor, Lucy, and Psyche. Topics on the science and instruments of the Japanese next small body mission, whose working group studies have just started, as well as the studies for the planetary defense, are also within the scope of this session.

9:00 AM - 9:15 AM

[PPS03-01] Spectral evolutions of primitive asteroids
inferred from remote sensing and sample analyses of Ryugu and Bennu

★Invited Papers

*Koki Yumoto1, Eri Tatsumi2, Yuichiro Cho1, Toru Kouyama3, Dathon Golish4, Shingo Kameda5, Hiroyuki Sato2, Bashar Rizk4, Daniella DellaGiustina4, Yasuhiro Yokota2, Hidehiko Suzuki6, Julia de León7,8, Humberto Campins9, Javier Licandro7,8, Marcel Popescu10,7,8, Juan Rizos7,8, Manabu Yamada11, Tomokatsu Morota1, Naoya Sakatani2, Chikatoshi Honda12, Moe Matsuoka3, Masahiko Hayakawa2, Hirotaka Sawada2, Kazunori Ogawa13,14, Yukio Yamamoto2, Shoki Mori1, Akiko Miyazaki2, Toru Yada2, Kentaro Hatakeda2, Kasumi Yogata2, Kana Nagashima2, Masanao Abe2, Tatsuaki Okada2, Masahiro Nishimura2, Ryota Fukai2, Tomohiro Usui2, Dante Lauretta4, Seiji Sugita1 (1.Univ. of Tokyo, 2.ISAS/JAXA, 3.AIST, 4.Univ. of Arizona, 5.Rikkyo Univ, 6.Meiji Univ. , 7.Instituto de Astrofísica de Canarias, 8.Univ. of La Laguna, 9.Univ. of Central Florida, 10.Astronomical Institute of the Romanian Academy, 11.Chiba Institute of Technology, 12.Univ. of Aizu, 13.Kobe Univ, 14.JSEC/JAXA)

9:15 AM - 9:30 AM

[PPS03-02] NIR SPECTRAL HETEROGENEITY OF RYUGU SAMPLES DUE TO SPACE WEATHERING.

*Soichiro Furukawa1,2, Tatsuaki Okada1,2, Kasumi Yogata2, Kentaro Hatakeda2,3, Toru Yada2, Akiko Miyazaki2, Kana Nagashima2, Rui Tahara2, Yuka Sugiyama2, Arisa Nakano2, Tomoko Ojima2, Yuya Hitomi2,3, Kazuya Kumagai2,3, Masahiro Nishimura2, Masanao Abe2, Tomohiro Usui2, Jean-Pierre Bibring4, Cedric Pilorget4, Vincent Hamm4, Rosario Brunetto4, Damien Loizeau4, Lucie Riu4, Tania Le Pivert-Jolive4, Rei Kanemaru2 (1.The University of Tokyo, 2.Institute of Space and Astronauti- cal Science, JAXA, 3.Marine Works Japan, 4.Institut d'Astrophysique Spatiale, Universite Paris-Saclay, Orsay, France)

9:45 AM - 10:00 AM

[PPS03-04] Evaluation of radiation damage on extraterrestrial organic matter by STXM-NEXAFS analysis

Takuji Ohigashi1,2, *Masayuki Uesugi3, Hayato Yuzawa2, Motoo Ito4, Naotaka Tomioka4, Yoshinori Takano4, Aiko Nakato5,7, Akira Yamaguchi5, Naoya Imae5, Makoto Kimura5, Naoki Shirai6 (1.High Energy Accelerator Research Organization, 2.Institute for Molecular Science, 3.Japan synchrotron radiation research institute, 4.Japan Agency for Marine-Earth Science and Technology, 5.National Institute of Polar Research, 6.kanagawa University, 7. Japan Aerospace Exploration Agency)

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