On the Fate of Slow Boulders Ejected after DART Impact on Dimorphos
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Título: | On the Fate of Slow Boulders Ejected after DART Impact on Dimorphos |
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Autor/es: | Moreno, Fernando | Tancredi, Gonzalo | Campo Bagatin, Adriano |
Grupo/s de investigación o GITE: | Astronomía y Astrofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías |
Palabras clave: | Asteroid dynamics |
Fecha de publicación: | 8-mar-2024 |
Editor: | IOP Publishing | American Astronomical Society |
Cita bibliográfica: | The Planetary Science Journal. 2024, 5:63. https://doi.org/10.3847/PSJ/ad26f8 |
Resumen: | On 2022 September 26 23:14 UT, the NASA Double Asteroid Redirection Test spacecraft successfully impacted Dimorphos, the secondary component of the binary (65803) Didymos system, demonstrating asteroid orbit deflection for the first time. A large amount of debris, consisting of a wide size–frequency distribution of particulates (from micron-sized dust to meter-sized boulders), was released, and a long-lasting tail has been observed over more than 9 months since impact. An important fraction of the ejecta mass has been ejected as individual meter-sized boulders, as have been found in images obtained by the Light Italian CubeSat for Imaging of Asteroid (LICIACube), as well as from the Hubble Space Telescope (HST). While the boulders observed by LICIACube had projected speeds of several tens of m s–1, those seen by the HST were about 100 times slower. In this paper, we analyze the long-term orbital evolution of those slow boulders using different dynamical codes, providing constraints on the fate of such large particles, and giving insight on the possibility of observing some of those boulders that might remain in orbit at the time of the ESA/Hera mission arrival to the binary system in late 2026. |
Patrocinador/es: | This work was supported by the DART mission, NASA contract 80MSFC20D0004. F.M. acknowledges financial support from grant PID2021-123370OB-I00 and from the Severo Ochoa grant CEX2021-001131-S funded by MCIN/AEI/ 10.13039/501100011033. G.T. acknowledges financial support from project FCE-1-2019-1-156451 of the Agencia Nacional de Investigación e Innovación ANII and Grupos I+D 2022 CSIC-Udelar (Uruguay). A.C.B. acknowledges funding through project (PGC 2021) PID2021-125883NB-C21, by MICINN (Spanish Government). |
URI: | http://hdl.handle.net/10045/141527 |
ISSN: | 2632-3338 |
DOI: | 10.3847/PSJ/ad26f8 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2024. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3847/PSJ/ad26f8 |
Aparece en las colecciones: | INV - Astronomía y Astrofísica - Artículos de Revistas |
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Moreno_etal_2024_PlanetSciJ.pdf | 2,74 MB | Adobe PDF | Abrir Vista previa | |
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