The Perturbed Full Two-body Problem: Application to Post-DART Didymos
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00574937" target="_blank" >RIV/67985815:_____/23:00574937 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0345207" target="_blank" >https://hdl.handle.net/11104/0345207</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/PSJ/acebc7" target="_blank" >10.3847/PSJ/acebc7</a>
Alternative languages
Result language
angličtina
Original language name
The Perturbed Full Two-body Problem: Application to Post-DART Didymos
Original language description
With the successful impact of the NASA Double Asteroid Redirection Test (DART) spacecraft in the Didymos-Dimorphos binary asteroid system, we provide an initial analysis of the post-impact perturbed binary asteroid dynamics. To compare our simulation results with observations, we introduce a set of “observable elements” calculated using only the physical separation of the binary asteroid, rather than traditional Keplerian elements. Using numerical methods that treat the fully spin-orbit-coupled dynamics, we estimate the system's mass and the impact-induced changes in orbital velocity, semimajor axis, and eccentricity. We find that the changes to the mutual orbit depend strongly on the separation distance between Didymos and Dimorphos at the time of impact. If Dimorphos enters a tumbling state after the impact, this may be observable through changes in the system's eccentricity and orbit period. We also find that any DART-induced reshaping of Dimorphos would generally reduce the required change in orbital velocity to achieve the measured post-impact orbit period, and will be assessed by the ESA Hera mission in 2027.
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
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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
The Planetary Science Journal
ISSN
2632-3338
e-ISSN
2632-3338
Volume of the periodical
4
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
141
UT code for WoS article
001048916600001
EID of the result in the Scopus database
2-s2.0-85177883705