Venus
Pluto has the longest REVOLUTION period Venus has the longest ROTATION period
venus
Venus
If you count Pluto as a planet its Pluto :D
Uranus has the longest day of any planet in the solar system, with a rotation period of about 17 hours and 14 minutes.
The planet with the largest (or longest) rotation period is Venus, at 243 Earth days (retrograde, meaning clockwise, instead of counterclockwise like the Earth).
There is no such planet known. The planet with the longest rotation period is Venus. That rotates in about 243 Earth days.
Uranus. 17h 14m 24s for one spin on its axis.
The velocity of a planet around the sun is inversely related to the distance from the sun. So the slowest planets are the ones farthest out. If you consider Pluto a planet, it takes the longest time to revolve around the sun. If you do not consider Pluto a planet, then Neptune would be the farthest planet from the sun and takes the longest time to revolve around the sun.
The motion of a planet about it axis is called the rotation of a planet.
The motion of a planet about it axis is called the rotation of a planet.
Rotation for a planet means spinning, and one complete rotation is a day (on that planet). All of the planets have different spin velocity, and therefore different day lengths. The shortest is Jupiter at under 10 Earth hours, and the longest is Venus (which rotates "backward" or clockwise) taking 243 Earth days.