ANALYSIS OF SPECTRAL VARIABILITY OF ASTEROID 3200 PHAEHTON IN PREPARATION TO DESTINY+ SPACE MISSION

‘DESTINY+’ (Demonstration and Experiment of Space Technology for INterplanetary voYage, Phaethon fLyby and dUst Science) is a joint mission of technology demonstration and science observation, which was selected for JAXA/ISAS small-class space program. The spacecraft will be launched in 2024 and (3200) Phaethon asteroid will be the flyby target [1]. The science observation includes high-speed flyby imaging of Phaethon, and direct measurement of physical and chemical properties of dust particles in the interplanetary space, dust trail and nearby Phaethon. The flyby imaging is performed with a panchromatic telescopic camera (TCAP) with a tracking mirror and a VIS-NIR multiband camera (MCAP) with four bands (425, 550, 700, 850 nm) [2]. In-situ dust analyses with a dust analyser (DDA) which is a combination of impact-ionization dust detector and time-of-flight mass spectrometer enables to analyse mass, arrival direction speed and element composition for dust particle.