Pluto is about 39 times as far from the sun as Earth is. Its average distance from the sun is about 3,647,240,000 miles (5,869,660,000 kilometers). Pluto travels around the sun in an elliptical (oval-shaped) orbit. At some point in its orbit, it comes closer to the sun than Neptune, the outermost planet. It stays inside Neptune's orbit for about 20 Earth years. This event occurs every 248 Earth years, which is about the same number of Earth years it takes Pluto to travel once around the sun. Damn, that's hard on the brain!! aaaaayyyyyyyyy....but AB crew are worth it!

164.8 Earth years http://wiki.answers.com/Q/How_much_time_is_needed_for_neptune_to_revolve_around_the_sun

A year on Neptune takes 164.8 Earth years. http://www.enchantedlearning.com/subjects/astronomy/planets/neptune/

The average distance between Neptune and the Sun is 4.55 billion km (about 30.1 times the average distance from the Earth to the Sun, or 30.1 AU) and it completes an orbit every 164.79 years. On July 12, 2011, Neptune will have completed the first full orbit since its discovery in 1846,[86][4] although it will not appear at its exact discovery position in our sky due to the Earth being in a different location in its 365.25 day orbit. The elliptical orbit of Neptune is inclined 1.77° compared to the Earth. Because of an eccentricity of 0.011, the distance from Neptune and the Sun varies by 101 million km between perihelion and aphelion, or the nearest and most distant points of the planet along the orbital path respectively.[2] The axial tilt of Neptune is 28.32°,[87] which is similar to the tilt of Earth and Mars. As a result this planet experiences similar seasonal changes. However, the long orbital period of Neptune means that the seasons last for forty Earth years.[72] Its sidereal rotation period (day) is roughly 16.11 hours long.[4] Since its axial tilt is comparable to the Earth's (23°), the variation in the length of its days over the course of its long year is not any more extreme. Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates with a period of about 18 hours, which is slower than the 16.1 hour rotation of the planet's magnetic field. By contrast, the reverse is true for the polar regions where the rotation period is 12 hours. This differential rotation is the most pronounced of any planet in the Solar System,[88] and it results in strong latitudinal wind shear.[47] http://en.wikipedia.org/wiki/Neptune 164.83 Earth Years http://mars.sgi.com/worlds/CyberMarz/Neptune/HTML/index.html Neptune is only 4.347 X 10^6 km from earth and one day is a little shorter than you are used to, only 16.1 hours. Its revolution is almost 165 earth years so it’s going to be a long summer! The atmosphere is of 74% hydrogen, 25% helium and 1% methane. Neptune has a lot of clouds and a very thick atmosphere. Neptune is 17.2 times as massive as the earth. http://www.stmary.ws/highschool/physics/astro98/neptune.html