Low-frequency Slivan states in the outer main belt?
Institute of Astronomy, Charles University,
V Holešovičkách 2, 180 00
Prague 8, Czech
e-mail: email@example.com; firstname.lastname@example.org
Received: 14 October 2015
Accepted: 5 December 2015
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 s6 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 s7 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.
Key words: celestial mechanics / minor planets, asteroids: general
© ESO, 2016