Effects of Impact and Target Parameters on the Results of a Kinetic Impactor: Predictions for the Double Asteroid Redirection Test (DART) Mission

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; Michael Owen, J.; Barnouin, Olivier; Cheng, Andy F.; Chocron, Sidney; Collins, Gareth S.; Davison, Thomas M.; ... (2022). Effects of Impact and Target Parameters on the Results of a Kinetic Impactor: Predictions for the Double Asteroid Redirection Test (DART) Mission. The planetary science journal, 3(11), p. 248. IOP Publishing 10.3847/psj/ac91cc

Stickle_2022_Planet._Sci._J._3_248.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (2MB) | Preview

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 endmember cases in the strength regime.

Item Type:

Journal Article (Original Article)


08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute

UniBE Contributor:

Raducan, Sabina-Denisa, Ferrari, Fabio, Jutzi, Martin


500 Science > 520 Astronomy
600 Technology > 620 Engineering
500 Science > 530 Physics




IOP Publishing




Dora Ursula Zimmerer

Date Deposited:

16 Mar 2023 16:52

Last Modified:

16 Mar 2023 23:27

Publisher DOI:






Actions (login required)

Edit item Edit item
Provide Feedback