Japan Geoscience Union Meeting 2019

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-PS Planetary Sciences

[P-PS03] Solar System Small Bodies: A New Frontier Arising Hayabusa 2, OSIRIS-REx and Other Projects

Wed. May 29, 2019 10:45 AM - 12:15 PM A01 (TOKYO BAY MAKUHARI HALL)

convener:Masateru Ishiguro(Department of Physics and Astronomy, Seoul National University), Taishi Nakamoto(Tokyo Institute of Technology), Masanao Abe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Olivier S Barnouin(Johns Hopkins University Applied Physics Laboratory), Chairperson:Masateru Ishiguro(Seoul National University)

10:45 AM - 11:00 AM

[PPS03-25] Overview and current status of DESTINY+ mission

★Invited Papers

*Tomoko Arai1, Masanori Kobayashi1, Ko Ishibashi1, Fumi Yoshida1, Hiroshi Kimura1, Takayuki Hirai1, Hong Peng1, Manabu Yamada1, Hiroki Senshu1, Koji Wada1, Ralf Srama2, Harald Kruger3, Jun-ichi Watanabe4, Takashi Ito4, Masateru Ishiguro5, Tomoki Nakamura6, Hikaru Yabuta7, Shogo Tachibana8, Takashi Mikouchi8, Shinsuke Abe9, Katsuhito Ohtsuka10, Seitaro Urakawa11, Keiko Nakamura-Messenger12, Mutsumi Komatsu13, Shingo Kameda14, Masato Kagitani6, Naru Hirata15, Hirohide Demura15, Sho Sasaki16, Takahiro Hiroi17, Goro Komatsu18, Hidehiro Kaneda19, Takaya Inamori19, Takaya Okamoto20, Toshifumi Yanagisawa20, Makoto Yoshikawa20, Hajime Yano20, Tatsuaki Okada20, Takahiro Iwata20, Takafumi Ootsubo20, Yasuhiro Kawakatsu20, Hiroyuki Toyota20, Kazutaka Nishiyama20, Takeshi Takashima20 (1.Planetary Exploration Research Center, Chiba Institute of Technology, 2.University of Stuttgart, 3.Max Planck Institute, 4.National Astronomical Observatory of Japan , 5.Seoul National Universtiy, 6.Tohoku University, 7.Hiroshima University, 8.The University of Tokyo, 9.Nihon University, 10.Tokyo Meteor Network, 11.Japan Spaceguard Association, 12.NASA , 13.The Graduate University for Advanced Studies, 14.Rikkyo University, 15.Aizu University, 16.Osaka University, 17.Brown University, 18.D'Annunzio University, 19.Nagoya University, 20.JAXA)

Keywords:DESTINY+, Phaethon, Flyby, Geminid meteor shower, IDP

DESTINY+ (Demonstration and Experiment of Space Technology for INterplanetary voYage, Phaethon fLyby and dUst Science) was selected in 2017 as a mission for JAXA/ISAS small-class program. It is a joint mission of technology demonstration and scientific observation. It will test high performance electric propelled vehicle technology and high-speed flyby of asteroid (3200) Phaethon and possibly asteroid 2005UD, which a break-up body from Phaethon as an extended mission. Engineering challenges include an up-close encounter at a distance of 500 km from Phaethon with radio-optical hybrid navigation guidance and control, and autonomous imaging based on optical information for target tracking during a high-speed flyby of 33km/sec. The science goal is to understand the nature and origin of cosmic dust brought onto the Earth, in the context of exogenous contribution of carbon and organics for possible prebiotic seeds of the terrestrial life. Phaethon is a parent body of Geminid meteor shower, and thus a known source to periodically provide dust to the Earth, via the dust stream. The science objectives are two folded: (1) in-situ analyses of velocity, arrival direction, mass and chemical composition of interplanetary and interstellar dust particles around 1 au, the dust trail, and nearby Phaethon, and (2) flyby imaging of Phaethon to study its geology, for understanding dust ejection mechanism of active asteroid and the surface compositional variation. High-spatial-resolution images of less than 5 meter per pixel are obtained with Telescopic camera (TCAP), and VIS-NIR spectral images of less than 100 meter per pixel are taken with multiband camera (MCAP). Mass, speed, arrival direction and chemical composition for each dust particle are analyzed with dust analyzer (DDA). Here, we present an overview and the current status of DESTINY+ mission.