  We study the gravitational effects of two celestrial bodies on a typical
object of the Kuyper Belt. The first body is a kuyperian object itself with
fairly large eccentricity and perihelion but with a large mass, about 16 times
the mass of the Earth. The second body is a star whose mass is 30% - 50% of the
mass of the sun that passes by our solar system at a speed between 25 km/sec
and 100 km/sec and at a distance of closest approach between 0.05 and 0.5 light
year. As a measure of the perturbations caused by these bodies on the light
kuyperian object, we analyse its eccentricity. We find that the effects due to
the passage of the wandering star are permanent in the sense that the
eccentricity of the kuyperian object remains anomalous long after the passage
of the star. The same is true of the heavy kuyperian object: it can perturb
greatly the orbit of the lighter kuyperian object, which leads to a permanent,
anomalous eccentricity.
