System design of the Hayabusa 2—Asteroid sample return mission to 1999 JU3 |
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| Institution: | 1. Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan;2. Department of Physics, Meiji University, 1-1-1, Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan;3. Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;4. Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan;5. Division of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan;6. Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI 02912, USA;7. Japan Aerospace Exploration Agency, JAXA Space Exploration Center, HAYABUSA2 Project, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan;8. Natural Sciences Cluster-Science Unit, Kochi University, 2-5-1 Akebono-cho, Kochi, Kochi 780-8520, Japan;9. Graduate School of Enviromental studies, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8601, Japan;10. Research Center for Advanced Information Science and Technology, The University of Aizu, Tsuruga, Ikkimachi, Aizuwakamatsu, Fukushima 965-8580, Japan;1. European Space Operation Centre/European Space Agency, Germany;2. ESOC/ESA, Germany;3. Telespazio VEGA Deutschland Gmbh, Germany;4. LSE Space GmbH, Germany;5. SCISYS Deutschland GmbH, Germany |
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| Abstract: | The Japan Aerospace Exploration Agency is currently developing the second asteroid sample return mission, designated as Hayabusa 2. Following the successful return of Hayabusa from the asteroid “Itokawa”, Hayabusa 2 is designed as a round-trip mission to the asteroid “1999 JU3”. The 1999 JU3 is a C-type asteroid, which is believed to contain organic matter and hydrated minerals. Thus, it is expected that successful sample collection will provide additional knowledge on the origin and evolution of the planets and, in particular, the origin of water and organic matter. The current mission scenario will enable the spacecraft to reach 1999 JU3 in the middle of 2018 and perform an asteroid proximity operation for 1.5 years. Three touch downs for sampling and one 2-m-class crater generation by means of a high-speed impact operation are planned during the asteroid proximity operation. The samples are to be brought back to the Earth by a re-entry capsule. The present paper describes the system design of Hayabusa 2, some key technical challenges of the mission, and the development status. |
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| Keywords: | Near Earth asteroids Sample return mission Solar system exploration Spacecraft development |
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