Neptune with 164 years.
Including Dwarf Planets Eris 550 years!
Venus
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total.
Technically, since Pluto is no longer a planet, but a dwarf planet, Uranus is the planet that takes the longest to orbit the sun.
well think about it the planets closer to the sun have the fastest orbit so knowing that the planets are already in order from shortest to longest orbit.
All 8 planets, including dwarf planet Pluto, orbit the Sun. As their distance from the Sun increases, the time it takes for the planet to complete one revolution around the Sun increases as well. In order from shortest orbital period to longest orbital period:MercuryVenusEarthMarsJupiterSaturnUranusNeptune
Venus
Uranus
Approxiamtely 6756313285.666678487m
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total.
Technically, since Pluto is no longer a planet, but a dwarf planet, Uranus is the planet that takes the longest to orbit the sun.
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total.
pluto
well think about it the planets closer to the sun have the fastest orbit so knowing that the planets are already in order from shortest to longest orbit.
All 8 planets, including dwarf planet Pluto, orbit the Sun. As their distance from the Sun increases, the time it takes for the planet to complete one revolution around the Sun increases as well. In order from shortest orbital period to longest orbital period:MercuryVenusEarthMarsJupiterSaturnUranusNeptune
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
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.
As it's the furthest planet out, Neptune takes the longest to orbit our sun, taking some 165 years to do so.