Or, technically speaking, what is their orbital eccentricity?

或者，更准备的来说是它们的轨道偏心率是多少？

Well, then all depends on the orbital eccentricity that the planets possess.

这就取决于行星的轨道偏心率了。

For planetary objects, when orbital eccentricity crosses 1, the planet no longer remains confined to the star it is bound to and " escapes" from its gravitational influence.

对于行星状物体，当轨道偏心率超过1时，行星不再局限于它所依附的恒星，并“逃离”其引力的影响。