On the orbital (in)stability of Trojan asteroids in the solar system
Article
Article Title | On the orbital (in)stability of Trojan asteroids in the solar system |
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Article Category | Article |
Authors | Lykawka, Patryk Sofia (Author), Horner, Jonathan (Author) and Mueller, Thomas (Author) |
Journal Title | Spaceguard Research |
Journal Citation | 5, pp. 13-16 |
Number of Pages | 4 |
Year | 2013 |
Place of Publication | Japan |
Web Address (URL) | http://adsabs.harvard.edu/abs/2013JSASR...5...13L |
Abstract | Jupiter and Neptune have currently large populations of asteroids orbiting about their L4 and L5 Lagrange points, also called Trojan asteroids. Because Trojans can evolve on stable orbits with lifetimes over Gyr, the study of these objects can provide crucial insights into the history of the solar system. We performed numerical simulations to investigate the origin and long term evolution of Trojans of the four giant planets. All giant planets were able to capture disk planetesimals as Trojans at the end of planet migration. However, only 25% and 1-5% of captured Jupiter and Neptune Trojans survived after 4 Gyr of dynamical evolution, respectively, while all captured Trojan populations of Saturn and Uranus were lost during that period. In addition, a non-negligible population of observed Trojans have been leaking out from the Trojan clouds, as evidenced by the dynamical states of (1173) Anchises (Jovian Trojan), and 2001 QR322 and 2008 LC18 (Neptunian Trojans). |
Keywords | solar system; Jupiter; Neptune; Trojans; asteroids; planet migration |
ANZSRC Field of Research 2020 | 519999. Other physical sciences not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Kindai University, Japan |
University of New South Wales | |
Max Planck Society, Germany |
https://research.usq.edu.au/item/q4534/on-the-orbital-in-stability-of-trojan-asteroids-in-the-solar-system
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