Please use this identifier to cite or link to this item: https://research.matf.bg.ac.rs/handle/123456789/1175
Title: The role of the Yarkovsky effect in the long-term dynamics of asteroid (469219) Kamo'oalewa
Authors: Fenucci, Marco
Novaković, Bojan 
Affiliations: Astronomy 
Keywords: Asteroids (72);Near-Earth objects (1092)
Issue Date: 2021
Rank: M21
Journal: Astronomical Journal
Abstract: 
The Near-Earth asteroid (469219) Kamo'oalewa (aka 2016 HO3) is an Earth coorbital and a potential space mission target. Its short-term dynamics are characterized by a periodic switching between quasisatellite and horseshoe configurations. Due to its small diameter of only about 36 m, the Yarkovsky effect may play a significant role in the long-term dynamics. In this work, we addressed this issue by studying the changes in the long-term motion of Kamo'oalewa caused by the Yarkovsky effect. We used an estimation of the magnitude of the Yarkovsky effect assuming different surface compositions and introduced the semimajor axis drift by propagating orbits of test particles representing the clones of the nominal orbit. Our simulations showed that the Yarkovsky effect may cause Kamo'oalewa to exit from the Earth coorbital region a bit faster when compared to a purely gravitational model. Nevertheless, it still could remain an Earth companion for at least 0.5 My in the future. Our results imply that Kamo'oalewa is the most stable Earth's coorbital object known so far, not only from a short-term perspective but also on long timescales.
URI: https://research.matf.bg.ac.rs/handle/123456789/1175
ISSN: 00046256
DOI: 10.3847/1538-3881/ac2902
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