The Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the moon of the (65803) Didymos asteroid system, on 26 September 2022 at 23:14:24.183 UTC. The spacecraft mass at the time of impact was 579.4 ± 0.7 kg, and the impact velocity was 6.1449 ± 0.0003 km/s, resulting in an impact energy of 10.94 ± 0.01 GJ. The impact changed the orbital period of Dimorphos relative to Didymos by -33.0 ± 1.0 minutes, and the initial estimate of the resulting momentum enhancement factor, β, is between 2.2 and 4.9, depending on Dimorphos’s mass.


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    Title :

    Characterization of the Dart Impact Site on Dimorphos


    Contributors:
    C. M. Ernst (author) / O. S. Barnouin (author) / R. T. Daly (author) / M. Pajola (author) / F. Tusberti (author) / A. Lucchetti (author) / N. Murdoch (author) / C. Robin (author) / J.-B. Vincent (author) / T. L. Farnham (author)

    Conference:

    54th Lunar and Planetary Science Conference ; 2023 ; The Woodlands, TX, US


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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