Pluto
Uranus.
Uranus.
I'm pretty sure its Pluto (:
The planet Uranus rotates on an axis that is tipped about 90 degrees to the ecliptic.
Uranus.
All planets lie in the plane of their orbit, but most spin on an that is nearly (many have tilted axes of spin) perpendicular to that plane. The one exception is the planet Uranus which has its axis of spin lying very close to its orbital plane.
Since Pluto, with an inclination of about 17.15 degrees, has been relegated to minor-planet status, the honor passes to Venus with an orbital inclination of approximately 3.39 degrees. See http://www.nineplanets.org/data.html
Uranus has an axial tilt of 97.86 degrees, which is near horizontal.
Pluto is the planet that has the lowest orbital velocity relative to that of the earth. The orbital velocity of Pluto is 0.159.
A planet's orbital period is also known as its year.
Pluto does not have the same orbital plane as the other 8 planets. That is one reason why the origin of Pluto is debated.