Hiroshi Naraoka

(奈良岡浩)

Profile Information

Affiliation: Institute of Space and Astronautical Science （ISAS), Japan Aerospace Exploration Agency (JAXA)

J-GLOBAL ID: 200901062976601762
researchmap Member ID: 1000165923

Research Interests

Research Areas

Natural sciences / Space and planetary science /

Research History

Apr, 2026 - Present

宇宙科学研究所, 宇宙航空研究開発機構
Feb, 2008 - Mar, 2026

九州大学大学院理学研究院教授
2004 - 2008

岡山大学理学部教授
1997 - 2004

東京都立大学大学院理学研究科助教授
1993 - 1997

Faculty of Science, Tokyo Metropolitan University

Education

- 1990

University of Tsukuba
- 1990

Graduate School, Division of Chemistry, University of Tsukuba
- 1983

University of Tsukuba
- 1983

First Cluster of College, University of Tsukuba

Papers

209

Direct observation of organic molecules in asteroid ryugu revealed by high-resolution atomic force microscope

Kota Iwata, Yasuhiro Oba, Hiroshi Naraoka, Hikaru Yabuta, Shogo Tachibana, Yoshiaki Sugimoto

Nature Communications, Apr 14, 2026
Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki, Jozef Masarik, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Kasumi Yogata, Toru Yada, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda, Masanao Abe, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Hirotaka Sawada, Satoshi Tanaka, Tomohiro Usui, Koji Wada, Hajime Yano, Makoto Yoshikawa

METEORITICS & PLANETARY SCIENCE, Feb 23, 2026
Direct comparison of the chemical composition of alkylated CHN compounds and mineral composition in the Murchison meteorite

Narumi Arai, Hiroshi Naraoka, Koichi Mimura, Minako Hashiguchi

GEOCHEMICAL JOURNAL, 2026
An I-Xe age 8 Myr after solar system formation in a Hayabusa2 sample records alteration on the parent planetesimal of asteroid Ryugu

S.A. Crowther, J.S. Cowpe, L. Fawcett, J.D. Gilmour, R. Okazaki, F. Kitajima, T. Yada, S. Tachibana, K. Yogata, K. Sakamoto, H. Yurimoto, T. Nakamura, T. Noguchi, H. Naraoka, H. Yabuta, S. Watanabe, Y. Tsuda, M. Nishimura, A. Nakato, A. Miyazaki, M. Abe, T. Okada, T. Usui, M. Yoshikawa, T. Saiki, S. Tanaka, F. Terui, S. Nakazawa, H. Busemann, K. Hashizume, B. Marty, A. Meshik, M.E.I. Riebe, D. Krietsch, C. Maden, A. Ishida, P. Clay, T. Lawton, M.W. Broadley, D.J. Byrne, E. Füri, L. Zimmermann, O. Pravdivtseva, Y.N. Miura, J. Park, K. Bajo, Y. Takano, K. Yamada, S. Kawagucci, Y. Matsui, M. Yamamoto, K. Righter, S. Sakai, N. Iwata, N. Shirai, M. Inagaki, M. Ebihara, K. Nishiizumi, K. Nagao, J.I. Lee, A. Kano, M.W. Caffee, R. Uemura

Geochimica et Cosmochimica Acta, 413 218-232, Jan, 2026
Bio-essential sugars in samples from asteroid Bennu

Yoshihiro Furukawa, Sako Sunami, Yoshinori Takano, Toshiki Koga, Yuta Hirakawa, Yasuhiro Oba, Hiroshi Naraoka, Daisuke Saigusa, Takaaki Yoshikawa, Satoru Tanaka, Daniel P. Glavin, Jason P. Dworkin, Harold C. Connolly, Dante S. Lauretta

NATURE GEOSCIENCE, Dec 2, 2025

Misc.

TOF-SIMS analysis of macromolecular organic matter in Ryugu samples.

橋口未奈子, 青木弾, 福島和彦, 薮田ひかる, 圦本尚義, 中村智樹, 野口高明, 岡崎隆司, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一

日本地球化学会年会要旨集(Web), 71st, 2024
Distribution of Hydrous Asteroids Inferred from Hydrogen Isotopic Compositions of Hydrous Mineral in Carbonaceous Chondrites

奈良岡浩, 圦本尚義

日本地球化学会年会要旨集(Web), 70th, 2023
TOF-SIMS analysis of organic matter in Ryugu samples.

橋口未奈子, 青木弾, 福島和彦, 薮田ひかる, 圦本尚義, 中村智樹, 野口高明, 岡崎隆司, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一

日本地球惑星科学連合大会予稿集(Web), 2023, 2023
SPECTRAL EMISSIVITY OF A PARTICLE FROM THE ASTEROID RYUGU

太刀川純孝, 星野遼, 田中智, 中村智樹, 中嶋大輔, 圦本尚義, 野口高明, 岡崎隆司, 薮田ひかる, 奈良岡浩, 坂本加奈子, 橘省吾, 渡邊誠一郎, 津田雄一

Thermophysical Properties (CD-ROM), 43rd, 2022
THERMAL DIFFUSIVITY OF A SLICED PARTICLE FROM THE ASTEROID RYUGU USING SPOT HEATING RADIATION THERMOMETRY COMBINED WITH 3D MODEL ANALYSIS

八木貴志, 山下雄一郎, 田中智, 中村智樹, 森田朋代, 菊入瑞葉, 天野香菜, 加川瑛一, 圦本尚義, 野口高明, 岡崎隆司, 薮田ひかる, 奈良岡浩, 坂本佳奈子, 橘省吾, 渡邊誠一郎, 津田雄一

Thermophysical Properties (CD-ROM), 43rd, 2022

Professional Memberships

Works

Research Projects

Chemical evolution of organic compounds and aqueous salts in carbonaceous asteroids

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2027
The Chemical Environment of the Solar System during its Formation

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Nov, 2020 - Mar, 2025
小惑星リュウグウから探る太陽系有機化合物の進化

科学研究費助成事業, 日本学術振興会, Apr, 2020 - Mar, 2024

奈良岡浩, 濱瀬健司
Unveiling life-building materials on the early-Earth by analyzing organic materials in Antarctic micrometeorites

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021

Yada Toru
Advanced Trace Organic Compound Study in Planetary Materials: Development of High Sensitivity and High Resolution

Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, May, 2015 - Mar, 2020

Naraoka Hiroshi

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