Low-frequency Slivan states in the outer main belt?

被引:0
|
作者
Vrastil, J. [1 ]
Vokrouhlicky, D. [1 ]
机构
[1] Charles Univ Prague, Inst Astron, V Holesovickach 2, CR-18000 Prague 8, Czech Republic
关键词
celestial mechanics; minor planets; asteroids:; general; SECULAR SPIN DYNAMICS; TILTING SATURN; EVOLUTION; ASTEROIDS; OBLIQUITIES; YARKOVSKY;
D O I
10.1051/0004-6361/201527555
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Context. Spin states of several main belt asteroids have been recently found to reside in what is called the Slivan state, namely a secular spin-orbit resonance with the s(6) mode of their orbital precession in space. Aims. We examine a possibility of the Slivan states of asteroids with other than orbital s6 precession frequency. Methods. The asteroids' orbital and spin states are numerically propagated using well-tested computer codes. We select parameter space favorable for the Slivan-state capture with the s(7) frequency mode of the orbital precession. The stability of these states is numerically verified. Results. We find that asteroid (184) Dejopeja has a spin state captured in (or very nearly) the Slivan state with the s7 orbital frequency. In general, such a situation may favorably occur for low-inclination orbits in the outermost part of the main asteroid belt. We expect these states to be common among the Themis family members.
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页数:6
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