A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10508558" target="_blank" >RIV/00216208:11320/25:10508558 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jwp7UMcSGv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jwp7UMcSGv</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/PSJ/adb4f4" target="_blank" >10.3847/PSJ/adb4f4</a>

Result language
angličtina
Original language name
A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission
Original language description
The NASA Lucy mission is scheduled to fly by the main-belt asteroid (52246) Donaldjohanson on 2025 April 20. Donaldjohanson (DJ hereafter) is a member of the primitive (C-type class) Erigone collisional asteroid family located in the inner main belt in proximity of the source regions of asteroids (101955) Bennu and (162173) Ryugu, visited respectively by the OSIRIS-REx and Hayabusa2 missions. In this paper we provide an updated model for the Erigone family age and discuss DJ evolution resulting from nongravitational forces (namely Yarkovsky and Yarkovsky-O'Keefe-Radzievski-Paddack (YORP)), as well as its collisional evolution. We conclude that the best-fit family age is 155 Myr and that, on such timescales, both Yarkovsky and YORP effects may have affected the orbit and spin properties of DJ. Furthermore, we discuss how the NASA Lucy mission could provide independent insights on such processes, namely by constraining DJ shape, surface geology, and cratering history.
Czech name
—
Czech description
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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)

Project
<a href="/en/project/GA23-04946S" target="_blank" >GA23-04946S: Study of evolutionary paths of asteroids driven by non-gravitational forces with photometric observations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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