Pluto.

    Mean Distance from the Sun 39.5294 AU (5,913.52 million km / 3,584 million miles)
    Period of Revolution (length of year) 248 Earth years
    Period of Rotation -6.39 Earth days
    Length of day 6.39 Earth days
    Inclination 17.2 degrees
    Equatorial Diameter 2,300 km (1429 miles)

    Original image located at: http://photojournal.jpl.nasa.gov/index.html