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2021 Fiscal Year Annual Research Report

Development of next-generation science instruments for icy-body missions

Research Project

Project/Area Number 20H00194
Research InstitutionThe University of Tokyo

Principal Investigator

杉田 精司  東京大学, 大学院理学系研究科(理学部), 教授 (80313203)

Co-Investigator(Kenkyū-buntansha) 笠原 慧  東京大学, 大学院理学系研究科(理学部), 准教授 (00550500)
長 勇一郎  東京大学, 大学院理学系研究科(理学部), 助教 (00737687)
齋藤 義文  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (30260011)
諸田 智克  東京大学, 大学院理学系研究科(理学部), 准教授 (30415898)
塩谷 圭吾  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (40392815)
吉岡 和夫  東京大学, 大学院新領域創成科学研究科, 講師 (70637131)
本田 理恵  高知大学, 教育研究部自然科学系理工学部門, 教授 (80253334)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords惑星探査 / 探査機搭載装置 / 氷衛星 / 月
Outline of Annual Research Achievements

イオン質量分析器、可視カメラ光学系、焦点自動調節機構について、以下を実施した。
・イオン質量分析器: CubeSat搭載可能サイズ(1辺10cm以下)でありながらm/dm ~ 30 の高質量分解能を持つ飛行時間分析型質量分析部テストモデルの性能試験を実施した.高速デジタイザ等を購入して飛行時間分析計測の試験設備を整備したうえで,真空槽中に設置したテストモデルに5 keVのイオンビームを入射させることで質量スペクトルを取得した.外部から導入したN2ガスや真空槽中に残留するH2O, COガスに由来するC, N, Oの原子イオンのピークが十分に分解されており,設計通りのm/dm ~ 30の質量分解能が達成されていることを確認できた.
・可視カメラ光学系:昨年度に設計・製作したゴースト低減新装置を用いた性能評価試験を網羅的に実施し、2枚のフィルタを組みわせることでゴーストの光量を入射光強度の1/10000以下に低減できることを確認した.
さらに,超小型探査機への応用を意識して,低コスト(<100万円)の民生品CMOSセンサの搭載可能性の検討に向けて,CMOSセンサ駆動用の電子回路基板を設計・制作した.この基板は探査機搭載を前提としてFPGAで駆動されており,CMOSセンサの駆動の他に,画像処理や探査機との通信,電源変換等も行う能力を持つ.これにより、CMOSセンサの耐放射線性能試験や,高速演算処理のためのソフトウェア開発に繋げる準備が整った。
・焦点自動調節機構:ステッピングモータとリニアガイドを使用したレンズ位置調整機構を製造した。機能性能試験にて駆動距離、位置駆動制御、バックラッシュ、直進度のずれのいずれも設計要求が達成できることを確認した。さらに振動・衝撃・熱真空試験を実施し、ロケット打ち上げ時の振動衝撃に十分に耐えられることも実証した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

光学マルチバンドカメラについては、明るい光学系を持って且つ迷光度の非常に低い試作品が完成し、性能検証試験で予定通りの好成績を得た。イオン計測装置については、イオン源の感度向上の実験が進展した点が大きな進展である。レーザー照射装置については、試作品を用いた自動焦点調節装置の新アルゴリズムの検証実験まで完了した。また月探査機への搭載機会獲得のための活動は、米国Artemis計画を契機として日本国内での新しい探査計画の検討が進みつつあり、順調な進展が見られる。このように、光学マルチバンドカメラ、イオン計測装置、レーザー照射装置の開発がいずれも順調に進むとともに、探査機への搭載機会獲得の努力も進捗を見せている。

Strategy for Future Research Activity

概ね当初の予定通りに各コンポーネントの試作機作成と性能検証試験が進捗しているので、今後も当初計画に沿って性能評価試験と改良のための設計作業を実施していく。その一方で、Artemis計画に関連した比較的大型の月探査機の検討への参画が国内を中心に呼び掛けられている。本研究で開発している装置は、大型の月探査にも応用が可能なものであるので、そちらへの参画も視野に入れた検討を本格化させる。また、海外探査計画における装置搭載機会も引き続き模索する。そのため、月探査機かぐやデータの詳細見直しによる観測条件の絞り込み、および小惑星探査機はやぶさ2のデータ処理システムをベースにした画像データ処理システムの開発も引き続き進める。

  • Research Products

    (49 results)

All 2022 2021

All Journal Article (47 results) (of which Int'l Joint Research: 47 results,  Peer Reviewed: 46 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Superfast precipitation of energetic electrons in the radiation belts of the Earth2022

    • Author(s)
      Zhang Xiao-Jia、Artemyev Anton、Angelopoulos Vassilis、Tsai Ethan、Wilkins Colin、Kasahara Satoshi、Mourenas Didier、Yokota Shoichiro、Keika Kunihiro、Hori Tomoaki、Miyoshi Yoshizumi、Shinohara Iku、Matsuoka Ayako
    • Journal Title

      Nature Communications

      Volume: 13 Pages: online

    • DOI

      10.1038/s41467-022-29291-8

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Size frequency measurements of meter-sized craters and boulders in the lunar polar regions for landing-site selections of future lunar polar missions2022

    • Author(s)
      Kawashima O.、Morota T.、Ohtake M.、Kasahara S.
    • Journal Title

      Icarus

      Volume: 378 Pages: 114938~114938

    • DOI

      10.1016/j.icarus.2022.114938

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Preferential Energization of Lower‐Charge‐State Heavier Ions in the Near‐Earth Magnetotail2022

    • Author(s)
      Keika K.、Kasahara S.、Yokota S.、Hoshino M.、Seki K.、Amano T.、Kistler L. M.、Nos? M.、Miyoshi Y.、Hori T.、Shinohara I.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 127 Pages: Onlne

    • DOI

      10.1029/2021JA029786

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mid-infrared emissivity of partially dehydrated asteroid (162173) Ryugu shows strong signs of aqueous alteration2022

    • Author(s)
      Hamm M.、Grott M.、Senshu H.、Knollenberg J.、de Wiljes J.、Hamilton V. E.、Scholten F.、Matz K. D.、Bates H.、Maturilli A.、Shimaki Y.、Sakatani N.、Neumann W.、Okada T.、Preusker F.、Elgner S.、Helbert J.、K?hrt E.、Ho T.-M.、Tanaka S.、Jaumann R.、Sugita S.
    • Journal Title

      Nature Communications

      Volume: 13 Pages: Online

    • DOI

      10.1038/s41467-022-28051-y

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth2022

    • Author(s)
      Tachibana S.、Sawada H.、.. Sugita S.、Morota T.、Honda R.、... Cho Y.、Yoshioka K.、Yokota Y. et al.
    • Journal Title

      Science

      Volume: 375 Pages: 1011~1016

    • DOI

      10.1126/science.abj8624

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resurfacing processes constrained by crater distribution on Ryugu2022

    • Author(s)
      Takaki Naofumi、Cho Yuichiro、Morota Tomokatsu、Tatsumi Eri、Honda Rie、Kameda Shingo、Yokota Yasuhiro、Sakatani Naoya、Kouyama Toru、Hayakawa Masahiko、Matsuoka Moe、Yamada Manabu、Honda Chikatoshi、Suzuki Hidehiko、Yoshioka Kazuo、Ogawa Kazunori、Sawada Hirotaka、Michel Patrick、Sugita Seiji
    • Journal Title

      Icarus

      Volume: 377 Pages: 114911~114911

    • DOI

      10.1016/j.icarus.2022.114911

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optical design adopting tilted filters for reduction of stray light in planetary exploration cameras and other optics2021

    • Author(s)
      Enya Keigo、Yoshioka Kazuo、Cho Yuichiro、Sugita Seiji
    • Journal Title

      Proc. SPIE

      Volume: August 202 Pages: 1182011

    • DOI

      10.1117/12.2597266

    • Int'l Joint Research
  • [Journal Article] Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu2021

    • Author(s)
      Yada Toru、Abe Masanao、(incld: Seiji Sugita, Yuichicho Cho) et al.
    • Journal Title

      Nature Astronomy

      Volume: 6 Pages: 214~220

    • DOI

      10.1038/s41550-021-01550-6

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geologic History and Crater Morphology of Asteroid (162173) Ryugu2021

    • Author(s)
      Cho Y.、Morota T.、Kanamaru M.、..Yoshioka K.、... Sugita S.
    • Journal Title

      Journal of Geophysical Research: Planets

      Volume: 126 Pages: online

    • DOI

      10.1029/2020je006572

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In situ science on Phobos with the Raman spectrometer for MMX (RAX): preliminary design and feasibility of Raman measurements2021

    • Author(s)
      Cho Yuichiro、Buttger Ute、Rull Fernando、et al.
    • Journal Title

      Earth, Planets and Space

      Volume: 73 Pages: Online

    • DOI

      10.1186/s40623-021-01496-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mars’ atmospheric neon suggests volatile-rich primitive mantle2021

    • Author(s)
      Kurokawa Hiroyuki、Miura Yayoi N.、Sugita Seiji、Cho Yuichiro、Leblanc Fran?ois、Terada Naoki、Nakagawa Hiromu
    • Journal Title

      Icarus

      Volume: 370 Pages: 114685~114685

    • DOI

      10.1016/j.icarus.2021.114685

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Study of an Equatorward Detachment of Auroral Arc From the Oval Using Ground‐Space Observations and the BATS‐R‐US?CIMI Model2021

    • Author(s)
      Yadav Sneha、Shiokawa K.、Oyama S.、Inaba Y.、Takahashi N.、Seki K.、Keika K.、Chang Tzu‐Fang、Tam S. W. Y.、Wang B.‐J.、Kazama Y.、Wang S.‐Y.、Asamura K.、Kasahara S. et al.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Onlne

    • DOI

      10.1029/2020JA029080

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Role of Ducting in Relativistic Electron Loss by Whistler‐Mode Wave Scattering2021

    • Author(s)
      Artemyev A. V.、Demekhov A. G.、Zhang X.‐J.、Angelopoulos V.、Mourenas D.、Fedorenko Yu V.、Maninnen J.、Tsai E.、Wilkins C.、Kasahara S.、Miyoshi Y.、Matsuoka A.、Kasahara Y.、Mitani T.、Yokota S.、Keika K.、Hori T.、Matsuda S.、Nakamura S.、Kitahara M.、Takashima T.、Shinohara I.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2021JA029851

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Comparative Study of Electric Currents and Energetic Particle Fluxes in a Solar Flare and Earth Magnetospheric Substorm2021

    • Author(s)
      Artemyev Anton、Zimovets Ivan、Sharykin Ivan、Nishimura Yukitoshi、Downs Cooper、Weygand James、Fiori Robyn、Zhang Xiao-Jia、Runov Andrei、Velli Marco、Angelopoulos Vassilis、Panasenco Olga、Russell Christopher T.、Miyoshi Yoshizumi、Kasahara Satoshi、et al
    • Journal Title

      The Astrophysical Journal

      Volume: 923 Pages: 151~151

    • DOI

      10.3847/1538-4357/ac2dfc

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Relative Contribution of ULF Waves and Whistler‐Mode Chorus to the Radiation Belt Variation During the May 2017 Storm2021

    • Author(s)
      Takahashi Naoko、Seki Kanako、Fok Mei‐Ching、Zheng Yihua、Miyoshi Yoshizumi、Kasahara Satoshi、Keika Kunihiro、Hartley David、Kasahara Yoshiya、Kasaba Yasumasa、Higashio Nana、Matsuoka Ayako、Yokota Shoichiro、Hori Tomoaki、Shoji Masafumi、Nakamura Satoko、Imajo Shun、Shinohara Iku
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA028972

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magnetic Field and Energetic Particle Flux Oscillations and High‐Frequency Waves Deep in the Inner Magnetosphere During Substorm Dipolarization: ERG Observations2021

    • Author(s)
      Miyashita Yukinaga、Chang Tzu‐Fang、Miyoshi Yoshizumi、Hori Tomoaki、Kadokura Akira、Kasahara Satoshi et al.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA029095

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cometary plasma science2021

    • Author(s)
      Goetz C.、Gunell H.、Volwerk M.、Beth A.、Eriksson A.、Galand M.、Henri P.、Nilsson H.、Wedlund C. Simon、Alho M.、Andersson L.、Andre N.、De Keyser J.、Deca J.、Ge Y.、Glassmeier K.-H.、Hajra R.、Karlsson T.、Kasahara S. et al.
    • Journal Title

      Experimental Astronomy

      Volume: 07 August 2021 Pages: Online

    • DOI

      10.1007/s10686-021-09783-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Preliminary Statistical Comparisons of Spin‐Averaged Electron Data From Arase and Van Allen Probes Instruments2021

    • Author(s)
      Szab‐Roberts M?ty?s、Shprits Yuri Y.、Allison Hayley J.、Vasile Ruggero、Smirnov Artem G.、Aseev Nikita A.、Drozdov Alexander Y.、Miyoshi Yoshizumi、Claudepierre Seth G.、Kasahara Satoshi、Yokota Shoichiro、Mitani Takefumi、Takashima Takeshi、Higashio Nana、Hori Tomo、Keika Kunihiro、Imajo Shun、Shinohara Iku
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA028929

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rocket Observation of Sub‐Relativistic Electrons in the Quiet Dayside Auroral Ionosphere2021

    • Author(s)
      Namekawa T.、Mitani T.、Asamura K.、Miyoshi Y.、Hosokawa K.、Ogawa Y.、Saito S.、Hori T.、Sugo S.、Kawashima O.、Kasahara S.、Nomura R.、Yagi N.、Fukizawa M.、Sakanoi T.、Saito Y.、Matsuoka A.、Shinohara I.、Fedorenko Y.、Nikitenko A.、Koehler C.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA028633

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evening Side EMIC Waves and Related Proton Precipitation Induced by a Substorm2021

    • Author(s)
      Yahnin A. G.、Popova T. A.、Demekhov A. G.、Lubchich A. A.、Matsuoka A.、Asamura K.、Miyoshi Y.、Yokota S.、Kasahara S.、Keika K.、Hori T.、Tsuchiya F.、Kumamoto A.、Kasahara Y.、Shoji M.、Kasaba Y.、Nakamura S.、Shinohara I.、Kim H.、Noh S.、Raita T.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA029091

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Contribution of Electron Pressure to Ring Current and Ground Magnetic Depression Using RAM‐SCB Simulations and Arase Observations During 7?8 November 2017 Magnetic Storm2021

    • Author(s)
      Kumar S.、Miyoshi Y.、Jordanova V. K.、Engel M.、Asamura K.、Yokota S.、Kasahara S.、Kazama Y.、Wang S.‐Y.、Mitani T.、Keika K.、Hori T.、Jun C.、Shinohara I.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2021JA029109

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Case for Electron-Astrophysics2021

    • Author(s)
      Verscharen Daniel、Wicks Robert T.、Alexandrova Olga、Bruno Roberto、Burgess David、Chen Christopher H. K.、D’Amicis Raffaella、De Keyser Johan、de Wit Thierry Dudok、Franci Luca、He Jiansen、Henri Pierre、Kasahara Satoshi et al.
    • Journal Title

      Experimental Astronomy

      Volume: 11 June 2021 Pages: Online

    • DOI

      10.1007/s10686-021-09761-5

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Low‐Altitude Ion Upflow Observed by EISCAT and its Effects on Supply of Molecular Ions in the Ring Current Detected by Arase (ERG)2021

    • Author(s)
      Takada M.、Seki K.、Ogawa Y.、Keika K.、Kasahara S.、Yokota S.、Hori T.、Asamura K.、Miyoshi Y.、Shinohara I.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA028951

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae2021

    • Author(s)
      Miyoshi Y.、Hosokawa K.、Kurita S.、Oyama S.-I.、Ogawa Y.、Saito S.、Shinohara I.、Kero A.、Turunen E.、Verronen P. T.、Kasahara S.、Yokota S.、Mitani T.、Takashima T.、Higashio N.、Kasahara Y.、Matsuda S.、Tsuchiya F.、Kumamoto A.、Matsuoka A.、Hori T.、Keika K.、Shoji M.、Teramoto M.、Imajo S.、Jun C.、Nakamura S.
    • Journal Title

      Scientific Reports

      Volume: 11 Pages: Online

    • DOI

      10.1038/s41598-021-92611-3

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characterization and Calibration of High‐Energy Electron Instruments Onboard the Arase Satellite2021

    • Author(s)
      Park I.、Miyoshi Y.、Mitani T.、Hori T.、Takashima T.、Kurita S.、Shinohara I.、Kasahara S.、Yokota S.、Keika K.、Claudepierre S. G.、Looper M. D.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2021JA029110

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] First Simultaneous Observation of a Night Time Medium‐Scale Traveling Ionospheric Disturbance From the Ground and a Magnetospheric Satellite2021

    • Author(s)
      Kawai K.、Shiokawa K.、Otsuka Y.、Oyama S.、Kasaba Y.、Kasahara Y.、Tsuchiya F.、Kumamoto A.、Nakamura S.、Matsuoka A.、Imajo S.、Kazama Y.、Wang S.‐Y.、Tam S. W. Y.、Chang T. F.、Wang B. J.、Asamura K.、Kasahara S.、Yokota S.、Keika K.、Hori T.、Miyoshi Y.、Jun C.、Shoji M.、Shinohara I.
    • Journal Title

      Journal of Geophysical Research: Space Physics

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JA029086

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Arase Observation of Simultaneous Electron Scatterings by Upper‐Band and Lower‐Band Chorus Emissions2021

    • Author(s)
      Kazama Y.、Miyoshi Y.、Kojima H.、Kasahara Y.、Kasahara S.、Usui H.、Wang B.‐J.、Wang S.‐Y.、Tam S. W. Y.、Chang T. F.、Asamura K.、Matsuda S.、Kumamoto A.、Tsuchiya F.、Kasaba Y.、Shoji M.、Matsuoka A.、Teramoto M.、Takashima T.、Shinohara I.
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Pages: Online

    • DOI

      10.1029/2021GL093708

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] YORP Effect on Asteroid 162173 Ryugu: Implications for the Dynamical History2021

    • Author(s)
      Kanamaru Masanori、Sasaki Sho、Morota Tomokatsu、Cho Yuichiro、Tatsumi Eri、Hirabayashi Masatoshi、Hirata Naru、Senshu Hiroki、Shimaki Yuri、Sakatani Naoya、Tanaka Satoshi、Okada Tatsuaki、Usui Tomohiro、Sugita Seiji、Watanabe Sei‐ichiro
    • Journal Title

      Journal of Geophysical Research: Planets

      Volume: 126 Pages: Online

    • DOI

      10.1029/2021JE006863

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] First compositional analysis of Ryugu samples by the MicrOmega hyperspectral microscope2021

    • Author(s)
      Pilorget C.、Okada T.、Hamm V.、Brunetto R.、Yada T.、... Sugita S. et al.
    • Journal Title

      Nature Astronomy

      Volume: 6 Pages: 221~225

    • DOI

      10.1038/s41550-021-01549-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Alignment determination of the Hayabusa2 laser altimeter (LIDAR)2021

    • Author(s)
      Noda Hirotomo、Senshu Hiroki、Matsumoto Koji、Namiki Noriyuki、Mizuno Takahide、Sugita Seiji et al.
    • Journal Title

      Earth, Planets and Space

      Volume: 73 Pages: Online

    • DOI

      10.1186/s40623-020-01342-8

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-resolution observations of bright boulders on asteroid Ryugu: 2. Spectral properties2021

    • Author(s)
      Sugimoto Chiho、Tatsumi Eri、Cho Yuichiro、Morota Tomokatsu、Honda Rie、... Sugita Seiji
    • Journal Title

      Icarus

      Volume: 369 Pages: 114591~114591

    • DOI

      10.1016/j.icarus.2021.114591

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphology2021

    • Author(s)
      Sugimoto Chiho、Tatsumi Eri、Cho Yuichiro、Morota Tomokatsu、Honda Rie、... Sugita Seiji
    • Journal Title

      Icarus

      Volume: 369 Pages: 114529~114529

    • DOI

      10.1016/j.icarus.2021.114529

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Opposition Observations of 162173 Ryugu: Normal Albedo Map Highlights Variations in Regolith Characteristics2021

    • Author(s)
      Yokota Yasuhiro、Honda Rie、Tatsumi Eri、Domingue Deborah、Schroder Stefan、Matsuoka Moe、Morota Tomokatsu、... Sugita Seiji
    • Journal Title

      The Planetary Science Journal

      Volume: 2 Pages: 177~177

    • DOI

      10.3847/PSJ/ac14ba

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rotational states and shapes of Ryugu and Bennu: Implications for interior structure and strength2021

    • Author(s)
      Roberts J.H.、Barnouin O.S.、Daly M.G.、Walsh K.J.、Nolan M.C.、Daly R.T.、Michel P.、Zhang Y.、Perry M.E.、Neumann G.A.、Seabrook J.A.、Gaskell R.W.、Palmer E.E.、Weirich J.R.、Watanabe S.、Hirata N.、Hirata Na、Sugita S.、Scheeres D.J.、McMahon J.W.、Lauretta D.S.
    • Journal Title

      Planetary and Space Science

      Volume: 204 Pages: 105268~105268

    • DOI

      10.1016/j.pss.2021.105268

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resurfacing processes on asteroid (162173) Ryugu caused by an artificial impact of Hayabusa2's Small Carry-on Impactor2021

    • Author(s)
      Honda Rie、Arakawa Masahiko、...Morota Tomokatsu ......Yoshioka Kazuo、... Sugita Seiji et al.
    • Journal Title

      Icarus

      Volume: 366 Pages: 114530~114530

    • DOI

      10.1016/j.icarus.2021.114530

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anomalously porous boulders on (162173) Ryugu as primordial materials from its parent body2021

    • Author(s)
      Sakatani N.、Tanaka S.、Okada T.、Fukuhara T.、Riu L.、Sugita S.、Honda R.、Morota T. et al.
    • Journal Title

      Nature Astronomy

      Volume: 5 Pages: 766~774

    • DOI

      10.1038/s41550-021-01371-7

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hayabusa2 extended mission: New voyage to rendezvous with a small asteroid rotating with a short period2021

    • Author(s)
      Hirabayashi M.、Mimasu Y.、Sakatani N.、Watanabe S.、Tsuda Y.、Saiki T.、Kikuchi S.、Kouyama T.、Yoshikawa M.、Tanaka S.、Nakazawa S.、Takei Y.、Terui F.、Takeuchi H.、Fujii A.、Iwata T.、Tsumura K.、Matsuura S.、Shimaki Y.、Urakawa S.、Ishibashi Y.、Hasegawa S.、Ishiguro M.、Kuroda D.、Okumura S.、Sugita S. et al.
    • Journal Title

      Advances in Space Research

      Volume: 68 Pages: 1533~1555

    • DOI

      10.1016/j.asr.2021.03.030

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Post-arrival calibration of Hayabusa2's optical navigation cameras (ONCs): Severe effects from touchdown events2021

    • Author(s)
      Kouyama Toru、Tatsumi Eri、Yokota Yasuhiro、Yumoto Koki、Yamada Manabu、Honda Rie、Kameda Shingo、Suzuki Hidehiko、Sakatani Naoya、Hayakawa Masahiko、Morota Tomokatsu、Matsuoka Moe、Cho Yuichiro、Honda Chikatoshi、Sawada Hirotaka、Yoshioka Kazuo、Sugita Seiji
    • Journal Title

      Icarus

      Volume: 360 Pages: 114353~114353

    • DOI

      10.1016/j.icarus.2021.114353

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improved method of hydrous mineral detection by latitudinal distribution of 0.7-μm surface reflectance absorption on the asteroid Ryugu2021

    • Author(s)
      Kameda Shingo、Yokota Yasuhiro、Kouyama Toru、Tatsumi Eri、Ishida Marika、Morota Tomokatsu、Honda Rie、Sakatani Naoya、Yamada Manabu、Matsuoka Moe、Suzuki Hidehiko、Cho Yuichiro、Hayakawa Masahiko、Honda Chikatoshi、Sawada Hirotaka、Yoshioka Kazuo、Ogawa Kazunori、Sugita Seiji
    • Journal Title

      Icarus

      Volume: 360 Pages: 114348~114348

    • DOI

      10.1016/j.icarus.2021.114348

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An experimental study of photo-oxidation of Fe(II): Implications for the formation of Fe(III) (hydro)oxides on early Mars and Earth2021

    • Author(s)
      Tabata Haruhisa、Sekine Yasuhito、Kanzaki Yoshiki、Sugita Seiji
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 299 Pages: 35~51

    • DOI

      10.1016/j.gca.2021.02.006

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectrophotometric Analysis of the Ryugu Rock Seen by MASCOT: Searching for a Carbonaceous Chondrite Analog2021

    • Author(s)
      Schr?der Stefan、Otto Katharina、Scharf Hannah、Matz Klaus-Dieter、Schmitz Nicole、Scholten Frank、Mottola Stefano、Trauthan Frank、Koncz Alexander、Michaelis Harald、Jaumann Ralf、Ho Tra-Mi、Yabuta Hikaru、Sugita Seiji
    • Journal Title

      The Planetary Science Journal

      Volume: 2 Pages: 58~58

    • DOI

      10.3847/PSJ/abbb97

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical modeling of lander interaction with a low-gravity asteroid regolith surface2021

    • Author(s)
      Thuillet Florian、Zhang Yun、Michel Patrick、Biele Jens、Kameda Shingo、Sugita Seiji、Tatsumi Eri、Schwartz Stephen R.、Ballouz Ronald-Louis
    • Journal Title

      Astronomy &amp; Astrophysics

      Volume: 648 Pages: A56~A56

    • DOI

      10.1051/0004-6361/201936128

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ballistic deployment of the Hayabusa2 artificial landmarks in the microgravity environment of Ryugu2021

    • Author(s)
      Kikuchi Shota、Ogawa Naoko、... Sugita Seiji、Watanabe Sei-ichiro、Tsuda Yuichi
    • Journal Title

      Icarus

      Volume: 358 Pages: 114220~114220

    • DOI

      10.1016/j.icarus.2020.114220

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectral characterization of the craters of Ryugu as observed by the NIRS3 instrument on-board Hayabusa22021

    • Author(s)
      Riu Lucie、Pilorget C?dric、Milliken Ralph、Kitazato Kohei、Nakamura Tomoki、Cho Yuichiro、Matsuoka Moe、Sugita Seiji、Abe Masanao、Matsuura Shuji、Ohtake Makiko、Kameda Shingo、Sakatani Naoya、Tatsumi Eri、Yokota Yasuhiro、Iwata Takahiro
    • Journal Title

      Icarus

      Volume: 357 Pages: 114253~114253

    • DOI

      10.1016/j.icarus.2020.114253

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thermally altered subsurface material of asteroid (162173) Ryugu2021

    • Author(s)
      Kitazato K.、Milliken R. E.、... Sugita S.、Honda R.、Morota T.、... Cho Y.、Yoshioka K. et al.
    • Journal Title

      Nature Astronomy

      Volume: 5 Pages: 246~250

    • DOI

      10.1038/s41550-020-01271-2

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simulation of Seismic Wave Propagation on Asteroid Ryugu Induced by The Impact Experiment of The Hayabusa2 Mission: Limited Mass Transport by Low Yield Strength of Porous Regolith2021

    • Author(s)
      Nishiyama G.、Kawamura T.、Namiki N.、Fernando B.、Leng K.、Onodera K.、Sugita S et al.
    • Journal Title

      Journal of Geophysical Research: Planets

      Volume: 126 Pages: Online

    • DOI

      10.1029/2020JE006594

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crater depth-to-diameter ratios on asteroid 162173 Ryugu2021

    • Author(s)
      Noguchi Rina、Hirata Naoyuki、Hirata Naru、Shimaki Yuri、Nishikawa Naoki、Tanaka Sayuri、Sugiyama Takaaki、Morota Tomokatsu、Sugita Seiji et al.
    • Journal Title

      Icarus

      Volume: 354 Pages: 114016~114016

    • DOI

      10.1016/j.icarus.2020.114016

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Challenges for ion measurements in a comet mission2021

    • Author(s)
      Kasahara, S., S. Yokota, K. Asamura, Y. Saito, M. Hirahara, A. Matsuoka, N. Murata, T. Amano, K. Keika, Y. Ohira, and K. Yoshioka
    • Organizer
      Japan Geoscience Union
    • Int'l Joint Research
  • [Presentation] Comet Interceptorの科学目的とミッション要求2021

    • Author(s)
      笠原慧,河北秀世,新中善晴,吉岡和夫,坂谷尚哉,亀田真吾,松岡彩子,村田直史,原田裕己,船瀬龍,中島晋太郎,尾崎直哉,宇佐美尚人,Comet Interceptor science team
    • Organizer
      日本惑星科学会 2021年秋季講演会

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Published: 2022-12-28  

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