3200 PHAETHON, AN ACTIVE ASTEROID: SURFACE ALTERATIONS AND EXPECTATIONS FOR DESTINY+ SPACE MISSION

Angrisani, M.; Palomba, E.; Rognini, E.; Pratesi, G.; Dirri, F.; Longobardo, A.; Gisellu, C.; Migliorni, A.; D’Aversa, E.; Arai, T.

(3200) Phaethon in a nutshell: (3200) Phaethon asteroid is the flyby target of ‘DESTINY+’ (Demon-stration and Experiment of Space Technology for INterplanetary voYage, Phaethon fLyby and dUst Science), a JAXA/ISAS mission with a planned launch on 2024. 3200 Phaethon is supposed to be the parent body of Geminids meteor shower [1]. The top-shaped Phaethon has an effective diameter estimated to be in the range of 5–6 km with a rotation period of ≈ 3.6 h [2,3]. (3200) Phaethon is actually classified as a B-type asteroid [4]. B-type asteroids are commonly linked to dehydrated CI/CM chondrites. The spectral features of CI/CM chondrites are chemically altered from hydrated C-type to B-type by thermal metamor-phism [5,6]. Thus, the surfaces of B-type asteroids are considered to be subjected to

3200 PHAETHON, AN ACTIVE ASTEROID: SURFACE ALTERATIONS AND EXPECTATIONS FOR DESTINY+ SPACE MISSION / M. Angrisani , E. Palomba, E. Rognini, G. Pratesi, F. Dirri, A. Longobardo, C. Gisellu, A. Migliorni ,E. D’Aversa, T. Arai. - ELETTRONICO. - (2024), pp. 0-0. (Intervento presentato al convegno XIX Congresso Nazionale di Scienze Planetarie).