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In a previous paper, we developed a technique for estimating the innereccentricity in coplanar hierarchical triple systems on initially circularorbits, with comparable masses and with well separated components, based on anexpansion of the rate of change of the Runge-Lenz vector. Now, the sametechnique is extended to non-coplanar orbits. However, it can only be appliedto systems with ${I_{0}<39.23^{\circ}}$ or ${I_{0}>140.77^{\circ}}$, where${I}$ is the inclination of the two orbits, because of complications arisingfrom the so-called 'Kozai effect'. The theoretical model is tested againstresults from numerical integrations of the full equations of motion.

Eccentricity generation in hierarchical triple systems with non-coplanar and initially circular orbits