講演情報
[PPS03-25]Overview and current status of DESTINY+ mission★Invited Papers
*荒井 朋子1、小林 正規1、石橋 高1、吉田 二美1、木村 宏1、平井 隆之1、洪 鵬1、山田 学1、千秋 博紀1、和田 浩二1、スラマ ラルフ2、クルーガー ハラルド3、渡部 潤一4、伊藤 孝士4、石黒 正晃5、中村 智樹6、薮田 ひかる7、橘 省吾8、三河内 岳8、阿部 新助9、大塚 勝仁10、浦川 聖太郎11、中村メッセンジャー 圭子12、小松 睦美13、亀田 真吾14、鍵谷 将人6、平田 成15、出村 裕英15、佐々木 晶16、廣井 隆弘17、小松 吾郎18、金田 英宏19、稲守 孝哉19、岡本 尚也20、柳沢 俊史20、吉川 真20、矢野 創20、岡田 達明20、岩田 隆浩20、大坪 貴文20、川勝 康弘20、豊田 裕之20、西山 和孝20、高島 健20 (1.千葉工業大学惑星探査研究センター、2.シュツットガルト大学、3.マックスプランク研究所、4.国立天文台、5.ソウル大学、6.東北大学、7.広島大学、8.東京大学、9.日本大学、10.東京流星観測網、11.日本スペースガード協会、12.NASA、13.総合研究院大学、14.立教大学、15.会津大学、16.大阪大学、17.ブラウン大学、18.ダヌンツィオ大学、19.名古屋大学、20.宇宙航空研究開発機構)
キーワード：
デスティニープラス、フェートン、フライバイ、ふたご座流星群、惑星間塵
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.