JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

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

[P-PS07] Solar System Small Bodies: Explorations of Ryugu, Bennu, and the Solar System at Large

convener:Taishi Nakamoto(Tokyo Institute of Technology), Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Dante S Lauretta(University of Arizona), Masateru Ishiguro(Department of Physics and Astronomy, Seoul National University)

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

*Ozaki Naoya1, Takayuki Yamamoto1, Nishanth Pushparaj2, Diogene Alessandro Dei Tos1, Onur Celik2, Ferran Gonzalez-Franquesa2, Roger Gutierrez Ramon2, Kanako Machii4, Takuya Chikazawa5, Tomoko Arai3, Yasuhiro Kawakatsu1, Kazutaka Nishiyama1, Takeshi Takashima1 (1.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 2.SOKENDAI, the Graduate University for Advanced Studies, 3.Planetary Exploration Research Center, Chiba Institute of Technology, 4.University of Electro-Communications, 5.University of Tokyo)

Keywords:DESTINY+, Asteroid Flyby, Near Earth Asteroid

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.