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樋口 有理可 所属 京都産業大学 理学部 宇宙物理・気象学科 職種 准教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2020/03 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Improving Hayabusa2 trajectory by combining LIDAR data and a shape model |
| 執筆形態 | その他 |
| 掲載誌名 | Icarus |
| 出版社・発行元 | Elsevier BV |
| 巻・号・頁 | 338,pp.113574-113574 |
| 著者・共著者 | Koji Matsumoto,Hirotomo Noda,Yoshiaki Ishihara,Hiroki Senshu,Keiko Yamamoto,Naru Hirata,Naoyuki Hirata,Noriyuki Namiki,Toshimichi Otsubo,Arika Higuchi,Sei-ichiro Watanabe,Hitoshi Ikeda,Takahide Mizuno,Ryuhei Yamada,Hiroshi Araki,Shinsuke Abe,Fumi Yoshida,Sho Sasaki,Shoko Oshigami,Seiitsu Tsuruta,Kazuyoshi Asari,Makoto Shizugami,Yukio Yamamoto,Naoko Ogawa,Shota Kikuchi,Takanao Saiki,Yuichi Tsuda,Makoto Yoshikawa,Satoshi Tanaka,Fuyuto Terui,Satoru Nakazawa,Tomohiro Yamaguchi,Yuto Takei,Hiroshi Takeuchi,Tatsuaki Okada,Manabu Yamada,Yuri Shimaki,Kei Shirai,Kazunori Ogawa,Yu-ichi Iijima |
| 概要 | Precise information of spacecraft position with respect to target body is of importance in terms of scientific interpretation of remote sensing data. In case of Hayabusa2, a sample return mission from asteroid Ryugu, such information is also necessary for landing site selection activity. We propose a quick method to improve the spacecraft trajectory when laser altimeter range measurements and a shape model are provided together with crude initial trajectory, spacecraft attitude information, and asteroid spin information. We compared topographic features contained in the altimeter data with those expressed by the reference shape model, and estimated long-period trajectory correction so that discrepancy between the two topographic profiles was minimized. The improved spacecraft positions are consistent with those determined by image-based stereophotoclinometry method within a few tens of meters. With such improved trajectory, the altimeter ranges can be converted to Ryugu's topographic profiles that are appropriate for geophysical interpretation. We present a geophysical application that invokes possibility of impact-induced formation of the Ryugu's western bulge. |
| DOI | 10.1016/j.icarus.2019.113574 |
| ISSN | 0019-1035/1090-2643 |