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http://hdl.handle.net/20.500.12386/34859
Title: | Effects of Impact and Target Parameters on the Results of a Kinetic Impactor: Predictions for the Double Asteroid Redirection Test (DART) Mission | Authors: | Stickle, Angela M. DeCoster, Mallory E. Burger, Christoph Caldwell, Wendy K. Graninger, Dawn Kumamoto, Kathryn M. Luther, Robert Ormö, Jens Raducan, Sabina Rainey, Emma Schäfer, Christoph M. Walker, James D. Zhang, Yun Michel, Patrick Owen, J. Michael Barnouin, Olivier Cheng, Andy F. Chocron, Sidney Collins, Gareth S. Davison, Thomas M. DOTTO, Elisabetta Ferrari, Fabio Herreros, M. Isabel Ivanovski, Stavro L. Jutzi, Martin LUCCHETTI, ALICE MARTELLATO, Elena PAJOLA, MAURIZIO Plesko, Cathy S. Syal, Megan Bruck Schwartz, Stephen R. Sunshine, Jessica M. Wünnemann, Kai |
Issue Date: | 2022 | Journal: | THE PLANETARY SCIENCE JOURNAL | Number: | 3 | Issue: | 11 | First Page: | 248 | Abstract: | The Double Asteroid Redirection Test (DART) spacecraft will impact into the asteroid Dimorphos on 2022 September 26 as a test of the kinetic impactor technique for planetary defense. The efficiency of the deflection following a kinetic impactor can be represented using the momentum enhancement factor, β, which is dependent on factors such as impact geometry and the specific target material properties. Currently, very little is known about Dimorphos and its material properties, which introduces uncertainty in the results of the deflection efficiency observables, including crater formation, ejecta distribution, and β. The DART Impact Modeling Working Group (IWG) is responsible for using impact simulations to better understand the results of the DART impact. Pre-impact simulation studies also provide considerable insight into how different properties and impact scenarios affect momentum enhancement following a kinetic impact. This insight provides a basis for predicting the effects of the DART impact and the first understanding of how to interpret results following the encounter. Following the DART impact, the knowledge gained from these studies will inform the initial simulations that will recreate the impact conditions, including providing estimates for potential material properties of Dimorphos and β resulting from DART’s impact. This paper summarizes, at a high level, what has been learned from the IWG simulations and experiments in preparation for the DART impact. While unknown, estimates for reasonable potential material properties of Dimorphos provide predictions for β of 1–5, depending on end-member cases in the strength regime. | URI: | http://hdl.handle.net/20.500.12386/34859 | URL: | https://api.elsevier.com/content/abstract/scopus_id/85146307604 https://iopscience.iop.org/article/10.3847/PSJ/ac91cc |
ISSN: | 2632-3338 | DOI: | 10.3847/PSJ/ac91cc | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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Stickle_2022_Planet._Sci._J._3_248.pdf | Pdf editoriale | 2.07 MB | Adobe PDF | View/Open |
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