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Characterization of the Dart Impact Site on DimorphosThe 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.
Document ID
20230000707
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
C. M. Ernst (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
O. S. Barnouin (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
R. T. Daly (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
M. Pajola ORCID(Astronomical Observatory of Padova Padova, Italy)
F. Tusberti (Astronomical Observatory of Padova Padova, Italy)
A. Lucchetti (Astronomical Observatory of Padova Padova, Italy)
N. Murdoch (University of Toulouse Toulouse, Midi-Pyrénées, France)
C. Robin (University of Toulouse Toulouse, Midi-Pyrénées, France)
J.-B. Vincent (DLR )
T. L. Farnham (University of Maryland University College Europe Kaiserslautern, Germany)
R.-L. Ballouz (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
P. A. Abell (Johnson Space Center Houston, Texas, United States)
J. R. Brucato (INAF - Osservatorio Astronomico di Cagliari Selargius, Italy)
N. L. Chabot (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
A. F. Cheng (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
E. Dotto (INAF - Osservatorio Astronomico di Cagliari Selargius, Italy)
M. Hirabayashi (Auburn University Auburn, Alabama, United States)
S. Marchi (Southwest Research Institute San Antonio, Texas, United States)
E. Mazzotta Epifani (INAF - Osservatorio Astronomico di Cagliari Selargius, Italy)
P. Michel (Université Côte d’Azur)
L. M. Parro (University of Arizona Tucson, Arizona, United States)
A. M. Stickle (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
J. M. Sunshine (University of Maryland, College Park College Park, Maryland, United States)
J. M. Trigo-Rodríguez (Institute of Space Sciences Barcelona, Spain)
H. A. Weaver (Johns Hopkins University Applied Physics Laboratory North Laurel, Maryland, United States)
Date Acquired
January 13, 2023
Subject Category
Lunar and Planetary Science and Exploration
Meeting Information
Meeting: 54th Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: US
Start Date: March 13, 2023
End Date: March 17, 2023
Sponsors: National Aeronautics and Space Administration
Funding Number(s)
WBS: 811073.02.52.01.11
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

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