[P-PS07] 太陽系小天体：リュウグウとベヌーの探査および太陽系小天体全般

[PPS07-14] Multiple Asteroid Flyby Tour Design Utilizing Low-Thrust and Gravity-Assist for DESTINY+ Mission

*尾崎 直哉¹、山本 高行¹、プシュパラジ ニシャント²、ディ-トス ディオジェネ-アレクサンドロ¹、セリク オヌル²、ゴンザレス ファラン²、グティエレス ラモン ロジャー²、町井 佳菜子⁴、近澤 拓弥⁵、荒井 朋子³、川勝 康弘¹、西山 和孝¹、高島 健¹ (1.宇宙航空研究開発機構　宇宙科学研究所、2.総合研究大学院大学、3.千葉工業大学 惑星探査研究センター、4.電気通信大学、5.東京大学)

キーワード：DESTINY+、小惑星フライバイ、地球近傍小惑星

DESTINY+mission is a candidate for JAXA’s Epsilon small-class program to be launched in the 2020s. To enable lower cost and higher frequency deep space missions, the spacecraft will demonstrate advanced technologies that include a highly efficient solar electric propulsion system. For the science mission, the spacecraft will perform high-speed flyby observations; exploring the asteroid (3200) Phaethon as the nominal mission and several more asteroids as an extra mission. This paper presents the DESTINY+ mission analysis for multiple asteroid flybys utilizing electric propulsion and Earth gravity-assist techniques. We discuss candidate asteroids that the spacecraft can potentially explore. The target asteroids should be finally selected considering technical constraints, such as remaining propellant, and scientific returns. Multiple asteroid flyby tours are beneficial as precursor missions for future full-scale missions that include asteroid sample return missions.