VADER: Probing the Dark Side of Dimorphos with LICIACube LUKE
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Título: | VADER: Probing the Dark Side of Dimorphos with LICIACube LUKE |
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Autor/es: | Zinzi, Angelo | Hasselmann, Pedro H. | Della Corte, V. | Deshapriya, J. D. Prasanna | Gai, Igor | Lucchetti, Alice | Pajola, Maurizio | Rossi, Alessandro | Dotto, Elisabetta | Mazzotta Epifani, Elena | Daly, R. Terik | Hirabayashi, Masatoshi | Farnham, Tony | Ernst, Carolyn | Ivanovski, Stavro | Li, Jian-Yang | Parro, Laura M. | Amoroso, M. | Beccarelli, Joel | Bertini, I. | Brucato, J. R. | Capannolo, A. | Caporali, S. | Ceresoli, M. | Cremonese, Gabriele | Dall'Ora, M. | Gomez Casajus, L. | Gramigna, E. | Ieva, Simone | Impresario, G. | Lasagni Manghi, R. | Lavagna, M. | Lombardo, M. | Modenini, Dario | Negri, B. | Palumbo, Pasquale | Perna, Davide | Pirrotta, S. | Poggiali, G. | Tortora, Paolo | Tusberti, Filippo | Zannoni, M. | Zanotti, G. |
Grupo/s de investigación o GITE: | Astronomía y Astrofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías |
Palabras clave: | Asteroids | Near-Earth objects |
Fecha de publicación: | 25-abr-2024 |
Editor: | IOP Publishing | American Astronomical Society |
Cita bibliográfica: | The Planetary Science Journal. 2024, 5:103. https://doi.org/10.3847/PSJ/ad3826 |
Resumen: | The ASI cubesat LICIACube has been part of the first planetary defense mission DART, having among its scopes to complement the DRACO images to better constrain the Dimorphos shape. LICIACube had two different cameras, LEIA and LUKE, and to accomplish its goal, it exploited the unique possibility of acquiring images of the Dimorphos hemisphere not seen by DART from a vantage point of view, in both time and space. This work is indeed aimed at constraining the tridimensional shape of Dimorphos, starting from both LUKE images of the nonimpacted hemisphere of Dimorphos and the results obtained by DART looking at the impacted hemisphere. To this aim, we developed a semiautomatic Computer Vision algorithm, named VADER, able to identify objects of interest on the basis of physical characteristics, subsequently used as input to retrieve the shape of the ellipse projected in the LUKE images analyzed. Thanks to this shape, we then extracted information about the Dimorphos ellipsoid by applying a series of quantitative geometric considerations. Although the solution space coming from this analysis includes the triaxial ellipsoid found by using DART images, we cannot discard the possibility that Dimorphos has a more elongated shape, more similar to what is expected from previous theories and observations. The result of our work seems therefore to emphasize the unique value of the LICIACube mission and its images, making even clearer the need of having different points of view to accurately define the shape of an asteroid. |
Patrocinador/es: | This work was supported by the Italian Space Agency (ASI) within the LICIACube project (ASI-INAF agreement AC No. 2019-31-HH.0) and by the DART mission, NASA contract 80MSFC20D0004. |
URI: | http://hdl.handle.net/10045/142506 |
ISSN: | 2632-3338 |
DOI: | 10.3847/PSJ/ad3826 |
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/ad3826 |
Aparece en las colecciones: | INV - Astronomía y Astrofísica - Artículos de Revistas |
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