Physical properties of near-Earth asteroids with a low delta-v: Survey of target candidates for the Hayabusa2 mission

PASJ: Publications of the Astronomical Society of Japan

Yang, Hongu¹  Yoshida, Michitoshi²  Shimizu, Yasuhiro³  Kawai, Nobuyuki⁴  Sarugaku, Yuki⁵  Larson, Steve⁵  Ohyama, Youichi⁵  Takato, Naruhisa⁶  Nagumo, Yu⁷  Ohba, Yohei⁸  Sekiguchi, Tomohiko⁸  Kawakami, Kyoko⁹  Ishiguro, Masateru^1,10  Takagi, Yuhei^1,11  Miura, Naoya^1,12  Kashikawa, Nobunari^1,12  Lin, Chi-Sheng^1,12  Okumura, Shin-ichiro^1,13  Kinoshita, Daisuke^1,13  Hasegawa, Sunao^1,13  Ohta, Kouji^1,13  Hattori, Takashi^1,14  Yanagisawa, Kenshi^1,15  Takahashi, Jun^1,15  Toda, Hiroyuki^1,16  Choi, Young-Jun^1,16  Miyasaka, Seidai^1,17  Watanabe, Makoto^1,18  Kuroda, Daisuke^1,19  Weissman, Paul^1,19  Yoshikawa, Makoto^2,20  Nishihara, Setsuko^2,21  Kasuga, Toshihiro^2,21  Kitazato, Kohei^2,22  Fuse, Tetsuharu^2,23  Abe, Masanao^2,23  Hanayama, Hidekazu^2,24  Urakawa, Seitaro^2,25  Hsiao, Hsiang-Yao^2,26  Arai, Akira^2,26  Aoki, Kentaro^2,26  Usui, Fumihiko^2,26  Nagayama, Shogo^2,27 

[1] Center for Planetary Science, Kobe University, 7-1-48 Minatojima-minamimachi, Chuo-Ku, Kobe, Hyogo 650-0047, Japan;Department of Applied Physics, Okayama University of Science, 1-1 Ridai, Kita-ku, Okayama, Okayama 700-0005, Japan;Department of Astronomy, Kyoto University, Kitashirakawaoiwake-cho, Sakyo, Kyoto, Kyoto 606-8502, Japan;Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;Department of Education, Hokkaido University of Education, 9 Hokumon, Asahikawa-shi, Hokkaido 070-8621, Japan;Department of Multi-Disciplinary Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan;Department of Physics, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto, Kyoto 603-8555, Japan;Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan;Division of Optical and Infrared Astronomy, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;Institute of Astronomy and Astrophysics, Academia Sinica, 11F of Astronomy-Mathematics Building, AS/NTU, No.1, Section 4, Roosevelt Rd., Taipei 10617, Taiwan, R.O.C;Institute of Astronomy, National Central University, 300 Zhongda Rd., Zhongli, Taoyuan City 320, Taiwan, R.O.C;Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan;Ishigakijima Astronomical Observatory, National Astronomical Observatory of Japan, 1024-1 Arakawa, Ishigaki, Okinawa 907-0024, Japan;Japan Spaceguard Association, Bisei Spaceguard Center 1716-3 Okura, Bisei, Ibara, Okayama 714-1411, Japan;Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto, Kyoto 603-8555, Japan;Lunar and Planetary Laboratory, University of Arizona, 1629 E University Blvd, Tucson, Arizona 85721-0092, USA;Nishi-Harima Astronomical Observatory, University of Hyogo, 407-2 Nishigaichi, Sayo-cho, Sayo, Hyogo 679-5313, Japan;Okayama Observatory, Kyoto University, 3037-5 Honjo, Kamogata-cho, Asakuchi, Okayama 719-0232, Japan;Planetary Science Institute, 1700 East Fort Lowell, Suite 106, Tucson, Arizona 85719, USA;Public Relations Center, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;Research Center for Advanced Information Science and Technology, The University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan;Space Science Division, Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon, Korea;Strategic Planning Department, National Institute of Information and Communications Technology, 4-2-1 Nukuikitama-chi, Koganei, Tokyo 184-8795, Japan;Subaru Telescope Okayama Branch Office, National Astronomical Observatory of Japan, 3037-5 Honjo, Kamogata-cho, Asakuchi, Okayama 719-0232, Japan;Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720, USA;Tokyo Metropolitan Government, 2-8-1 Nishishinjyuku, Shinjyuku-ku, Tokyo 163-8001, Japan

关键词: Sun: chromosphere;    Sun: flares;    Sun: magnetic fields;   

DOI  :  10.1093/pasj/psy119

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Sample return from the near-Earth asteroid known as 25143 Itokawa was conducted as part of the Hayabusa mission, with a large number of scientific findings being derived from the returned samples. Following the Hayabusa mission, Hayabusa2 was planned, targeting sample return from a primitive asteroid. The primary target body of Hayabusa2 was asteroid 162173 Ryugu; however, it was also necessary to gather physical information for backup target selection. Therefore, we examined five asteroids spectroscopically, 43 asteroids spectrophotometrically, and 41 asteroids through periodic analysis. Hence, the physical properties of 74 near-Earth asteroids were obtained, which helped the Hayabusa2 backup target search, and also furthered understanding of the physical properties of individual asteroids and their origins.

【 授权许可】

CC BY