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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

  • Czech description

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

    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