The double asteroid redirection test (DART): Planetary defense investigations and requirements

Andrew S. Rivkin, Nancy L. Chabot, Angela M. Stickle, Cristina A. Thomas, Derek C. Richardson, Olivier Barnouin, Eugene G. Fahnestock, Carolyn M. Ernst, Andrew F. Cheng, Steven Chesley, Shantanu Naidu, Thomas S. Statler, Brent Barbee, Harrison Agrusa, Nicholas Moskovitz, R. Terik Daly, Petr Pravec, Petr Scheirich, Elisabetta Dotto, Vincenzo Della CortePatrick Michel, Michael Küppers, Justin Atchison, Masatoshi Hirabayashi

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


The Double Asteroid Redirection Test (DART) is a Planetary Defense mission, designed to demonstrate the kinetic impactor technique on (65803) Didymos I Dimorphos, the secondary of the (65803) Didymos system. DART has four level 1 requirements to meet in order to declare mission success: (1) impact Dimorphos between 2022 September 25 and October 2, (2) cause at least a 73 s change in its binary orbit period via the impact, (3) measure the change in binary period to an uncertainty of 7.3 s or less, and (4) measure the momentum transfer efficiency (β) of the impact and characterize the resulting effects of the impact. The data necessary to achieve these requirements will be obtained and analyzed by the DART Investigation Team. We discuss the rationales for the data to be gathered, the analyses to be undertaken, and how mission success will be achieved.

Original languageEnglish (US)
Article numberac063e
JournalPlanetary Science Journal
Issue number5
StatePublished - Oct 2021

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Geophysics


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