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

Sunao Hasegawa, Daisuke Kuroda, Kohei Kitazato, Toshihiro Kasuga, Tomohiko Sekiguchi, Naruhisa Takato, Kentaro Aoki, Akira Arai, Young Jun Choi, Tetsuharu Fuse, Hidekazu Hanayama, Takashi Hattori, Hsiang Yao Hsiao, Nobunari Kashikawa, Nobuyuki Kawai, Kyoko Kawakami, Daisuke Kinoshita, Steve Larson, Chi Sheng Lin, Seidai MiyasakaNaoya Miura, Shogo Nagayama, Yu Nagumo, Setsuko Nishihara, Yohei Ohba, Kouji Ohta, Youichi Ohyama, Shin Ichiro Okumura, Yuki Sarugaku, Yasuhiro Shimizu, Yuhei Takagi, Jun Takahashi, Hiroyuki Toda, Seitaro Urakawa, Fumihiko Usui, Makoto Watanabe, Paul Weissman, Kenshi Yanagisawa, Hongu Yang, Michitoshi Yoshida, Makoto Yoshikawa, Masateru Ishiguro, Masanao Abe

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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, itwas 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.

Original languageEnglish
Article number114
JournalPublications of the Astronomical Society of Japan
Volume70
Issue number6
DOIs
StatePublished - 1 Dec 2018

Keywords

  • Methods: observational
  • Minor planets, asteroids: general
  • Techniques: photometric
  • Techniques: spectroscopic

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