On equilibrium stability in the Sitnikov problem

Details On equilibrium stability in the Sitnikov problem On equilibrium stability in the Sitnikov problem

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011cosre..49..534k&link_type=abstract

Cosmic Research, Volume 49, Issue 6, pp.534-537

Physics

Scientific paper

The problem of stability of the trivial equilibrium position in the Sitnikov problem is considered in the first approximation. The first approximation is shown to have the form of a linear second-order equation with time-periodic coefficient (the Hill-type equation). The equilibrium stability was studied on the basis of equation regularization in the vicinity of a singular point with subsequent calculation of the trace a of the monodromy matrix. The equilibrium stability is shown to be stable for almost all values of eccentricity e from the [0, 1] interval. The instability takes place on the discrete set of e values, when the mutipliers are multiple (with non-simple elementary divisors), e = 1 being a point of crowding of this set.

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