Assertion: asteroid's orbit | /r/HasProperty | perturbed
Facets:
Source sentences:
text: Due to the inherent long-term instability of orbits in this region, even centaurs such as 2000 GM 137 and 2001 XZ 255 , which do not currently cross the orbit of any planet, are in gradually changing orbits that will be perturbed until they start to cross the orbit of one or more of the giant planets.
text: Simulations indicate that the orbit of some Kuiper belt objects can be perturbed, resulting in the object's expulsion so that it becomes a centaur.