Neptune with an orbit time of 165 years.
(note:even though Pluto takes 248 years to orbit the sun it is classified as a asteroid not a planet)
-Mihi
As it's the furthest planet out, Neptune takes the longest to orbit our sun, taking some 165 years to do so.
Mars takes the longest of the inner planets.
Venus takes the second longest time to orbit the sun, with an orbital period of about 225 Earth days.
Neptune takes the longest time to orbit the Sun, with an orbital period of about 165 years.
Neptune takes the longest
Approxiamtely 6756313285.666678487m
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total.
Neptune takes the longest to revolve around the sun.
Planet Neptune takes the most time to orbit the sun, as it is the farthest away.
IN our solar system, the planet Neptune takes the longest. Or, if you want to include Pluto, Pluto. Or, if you want to include ALL of the "dwarf planets", then Eris (a.k.a. "Xena") takes the longest.
Neptune.
Depends on whether or not you call Pluto a Planet. If so, yes Pluto. Which takes around 248 earth days to orbit the sun. If not, it's Neptune. Which takes 165 earth days to orbit the sun.