Why do Trojan ASCS (not) escape?
- Author(s)
- Rudolf Dvorak, Kleomenis Tsiganis
- Abstract
The orbits of 12 Trojan asteroids, which have Lyapunov times TL ~ 105 years and were previously classified as ASCs(=asteroids in stable chaos), are integrated for 50 Myrs, along with a group of neighbouring initial conditions for each nominal orbit. About 40% of the orbits present strong instabilities in the inclination, which may be attributed primarily to the action of the v16 secular resonance; two escapes are also recorded. Higher-order secular resonances, involving the nodes of the outer planets, are also found to be responsible for chaotic motion. Orbital stability depends critically on the choice of initial conditions and, thus, these objects can be regarded as being on the edge of strong chaos.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Aristotle University of Thessaloniki
- Journal
- Celestial Mechanics and Dynamical Astronomy: an international journal of space dynamics
- Volume
- 78
- Pages
- 125-136
- No. of pages
- 12
- ISSN
- 0923-2958
- Publication date
- 2000
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/why-do-trojan-ascs-not-escape(4c0ab316-ce23-4f2a-bc07-733931ad4d42).html