The Yarkovsky effect for 99942 Apophis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10314990" target="_blank" >RIV/00216208:11320/15:10314990 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/15:00444681
Result on the web
<a href="http://dx.doi.org/10.1016/j.icarus.2015.01.011" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2015.01.011</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2015.01.011" target="_blank" >10.1016/j.icarus.2015.01.011</a>

Result language
angličtina
Original language name
The Yarkovsky effect for 99942 Apophis
Original language description
We use the recently determined rotation state, shape, size and thermophysical model of Apophis to predict the strength of the Yarkovsky effect in its orbit. Apophis does not rotate about the shortest principal axis of the inertia tensor, rather its rotational angular momentum vector wobbles at an average angle of similar or equal to 37 degrees from the body axis. Therefore, we pay special attention to the modeling of the Yarkovsky effect for a body in such a tumbling state, a feature that has not been described in detail so far. Our results confirm that the Yarkovsky effect is not significantly weakened by the tumbling state. The previously stated rule that the Yarkovsky effect for tumbling kilometer-size asteroids is well represented by a simple modelassuming rotation about the shortest body axis in the direction of the rotational angular momentum and with rotation period close to the precession period is confirmed. Taking into account uncertainties of the model parameters, as well a
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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