Space Sciences

The Dimorphos ejecta plume properties revealed by LICIACube

E. Dotto, J. D. P. Deshapriya, et al.

The Double Asteroid Redirection Test (DART) impacted Dimorphos, capturing the attention of scientists worldwide. Observations by the LICIACube CubeSat unveiled a striking ejecta plume, revealing details about its structure and behavior. This groundbreaking research conducted by E. Dotto, J. D. P. Deshapriya, and their esteemed colleagues from various institutions sheds light on the impact's effects and contributes to our understanding of planetary defense.

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Index

Abstract

The Double Asteroid Redirection Test (DART) impacted Dimorphos on September 26, 2022. LICIACube, a CubeSat deployed 15 days prior, observed the event from 71 seconds before impact to 320 seconds after. The ejecta plume was a cone with a 140 ± 4-degree aperture angle. The plume's inner region was blue, reddening with distance. The ejecta exhibited complex structure with filaments, dust, and boulders, with velocities ranging from tens of meters per second to about 500 meters per second. LICIACube's images provide unique insights into the DART impact's effects.

Publisher

Nature

Published On

Mar 21, 2024

Authors

E. Dotto, J. D. P. Deshapriya, I. Gai, P. H. Hasselmann, E. Mazzotta Epifani, G. Poggiali, A. Rossi, G. Zanotti, A. Zinzi, I. Bertini, J. R. Brucato, M. Dall’Ora, V. Della Corte, S. L. Ivanovski, A. Lucchetti, M. Pajola, M. Amoroso, O. Barnouin, A. Campo Bagatin, A. Capannolo, S. Caporali, M. Ceresoli, N. L. Chabot, A. F. Cheng, G. Cremonese, E. G. Fahnestock, T. L. Farnham, F. Ferrari, L. Gomez Casajus, E. Gramigna, M. Hirabayashi, S. Ieva, G. Impresario, M. Jutzi, R. Lasagni Manghi, M. Lavagna, J.-Y. Li, M. Lombardo, D. Modenini, P. Palumbo, D. Perna, S. Pirrotta, S. D. Raducan, D. C. Richardson, A. S. Rivkin, A. M. Stickle, J. M. Sunshine, P. Tortora, F. Tusberti, M. Zannoni

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