Recent collisional history of (65803) Didymos
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Título: | Recent collisional history of (65803) Didymos |
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Autor/es: | Campo Bagatin, Adriano | Dell'Oro, Aldo | Parro, Laura M. | Benavídez, Paula Gabriela | Jacobson, Seth A. | Lucchetti, Alice | Marzari, Francesco | Michel, Patrick | Pajola, Maurizio | Vincent, Jean-Baptiste |
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: | Double Asteroid Redirection Test | DART | Didymos | Near-Earth asteroid | Collisional history |
Fecha de publicación: | 3-may-2024 |
Editor: | Springer Nature |
Cita bibliográfica: | Nature Communications. 2024, 15:3714. https://doi.org/10.1038/s41467-024-48094-7 |
Resumen: | The Double Asteroid Redirection Test (DART, NASA) spacecraft revealed that the primary of the (65803) Didymos near-Earth asteroid (NEA) binary system is not exactly the expected spinning top shape observed for other km-size asteroids. Ground based radar observations predicted that such shape was compatible with the uncertainty along the direction of the asteroid spin axis. Indeed, Didymos shows crater and landslide features, and evidence for boulder motion at low equatorial latitudes. Altogether, the primary seems to have undergone sudden structural failure in its recent history, which may even result in the formation of the secondary. The high eccentricity of Didymos sets its aphelion distance inside the inner main belt, where it spends more than 1/3 of its orbital period and it may undergo many more collisions than in the NEA region. In this work, we investigate the collisional environment of this asteroid and estimate the probability of collision with multi-size potential impactors. We analyze the possibility that such impacts produced the surface features observed on Didymos by comparing collisional intervals with estimated times for surface destabilization by the Yarkovsky-O’Keefe-Radzievskii-Paddack (YORP) effect. We find that collisional effects dominate over potential local or global deformation due to YORP spin up. |
Patrocinador/es: | Project (PGC 2021) PID2021-125883NB-C21, by MICINN (Spanish Government): A.C.B., L.M.P., P.G.B. Call 2023 of the Italian National Institute for Astrophysics (INAF, act n. 38/2023): A.D.O. ESA funding through the Science Faculty—Funding reference ESA-SCI-SC-LE-191: P.G.B. “Margarita Salas” postdoctoral grant by the Spanish Ministry of University—NextGenerationEU: L.M.P. CIAPOS/2022/066 postdoctoral grant (European Social Fund. Generalitat Valenciana): L.M.P. Italian Space Agency (ASI) funding within the LICIACube project (ASI-INAF agreement n. 2019-31-HH.0): A.L., M.P. HERA project (ASI-INAF agreement n. 2022-8-HH.0): A.L., M.P. |
URI: | http://hdl.handle.net/10045/142649 |
ISSN: | 2041-1723 |
DOI: | 10.1038/s41467-024-48094-7 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1038/s41467-024-48094-7 |
Aparece en las colecciones: | INV - Astronomía y Astrofísica - Artículos de Revistas |
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