"I'm talking about the planet by the way" Pluto is NOT a planet, no matter what changes are made to planetary classification, it still violates the size necessary to be considered a planet. Also, its moon, Charon, is way too large in proportions of the system. As to its orbit, it has a highly eccentric orbit. It has an eccentricity of about .25, earth's is .02. The distance in Pluto's orbit varies a lot in comparison to the other planets. Its orbit can vary between 49 AU (astronomical units, which are equal to the distance between the Sun and the Earth) and about 27 AU. It's orbit is analogous to what is considered a comet. Pluto is more of a Kuiper belt object than anything else. It's too small, has a high orbital eccentricity, and its neighboring satellite is about the same size. Pluto isn't even fully developed; another reason why it's not a planet. The reason to sum it up as to why it's not considered a planet is because it is beyond the bell curve of planetary classification, it's too much of an extreme.