<prompt> Angalia kifungu hapa chini na kisha jibu swali baadaye kwa lugha ile ile kama kifungu: Passage: The eccentricity of Pans orbit causes its distance from Saturn to vary by 4 km. Its inclination, which would cause it to move up and down, is not distinguishable from zero with present data. The Encke Gap, within which Pan orbits, is about 325 km wide. Swali: Ni kipengele gani cha mzunguko wa Pan husababisha tofauti ya umbali?  <response>: Mlango wa Encke 