Título:
On the fate of slow boulders ejected after DART impact on Dimorphos
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Autor:
Moreno, Fernando
Tancredi Machado, Gonzalo José
Campo Bagatin, Adriano
Tancredi Machado, Gonzalo José
Campo Bagatin, Adriano
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Artículo
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Palabras clave:
Asteroid Dynamics
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Año de publicación:
2024
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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.
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The Planetary Science Journal, 2024, 5(3): 63
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ANII: FCE_1_2019_1_156451
Citación:
Moreno, F, Tancredi Machado, G y Campo Bagatin, A. "On the fate of slow boulders ejected after DART impact on Dimorphos". The Planetary Science Journal. [en línea] 2024, 5(3): 63. 11 h. DOI: 10.3847/PSJ/ad26f8
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Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| 10.3847-PSJ-ad26f8.pdf | — | 2.67 MB | Adobe PDF |