Orbital period change of Dimorphos due to the DART kinetic impact
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00574031" target="_blank" >RIV/67985815:_____/23:00574031 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0344392" target="_blank" >https://hdl.handle.net/11104/0344392</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41586-023-05805-2" target="_blank" >10.1038/s41586-023-05805-2</a>
Alternative languages
Result language
angličtina
Original language name
Orbital period change of Dimorphos due to the DART kinetic impact
Original language description
The Double Asteroid Redirection Test (DART) spacecraft successfully performed the first test of a kinetic impactor for asteroid deflection by impacting Dimorphos, the secondary of near-Earth binary asteroid (65803) Didymos, and changing the orbital period of Dimorphos. A change in orbital period of approximately 7 min was expected if the incident momentum from the DART spacecraft was directly transferred to the asteroid target in a perfectly inelastic collision1, but studies of the probable impact conditions and asteroid properties indicated that a considerable momentum enhancement (β) was possible2,3. In the years before impact, we used lightcurve observations to accurately determine the pre-impact orbit parameters of Dimorphos with respect to Didymos4-6. Here we report the change in the orbital period of Dimorphos as a result of the DART kinetic impact to be −33.0 ± 1.0 (3σ) min. Using new Earth-based lightcurve and radar observations, two independent approaches determined identical values for the change in the orbital period. This large orbit period change suggests that ejecta contributed a substantial amount of momentum to the asteroid beyond what the DART spacecraft carried.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA20-04431S" target="_blank" >GA20-04431S: Physical and dynamical properties of space mission target asteroids, and their evolutionary paths</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature
ISSN
0028-0836
e-ISSN
1476-4687
Volume of the periodical
616
Issue of the periodical within the volume
7957
Country of publishing house
GB - UNITED KINGDOM
Number of pages
4
Pages from-to
448-451
UT code for WoS article
000989784800002
EID of the result in the Scopus database
2-s2.0-85152472438