There is no planet whose rotation is exactly one earth year. The planet Venus comes the closest to rotating once every time the earth goes around the sun. The planet mars comes the closets to going around the sun once every time Earth does.
A complete rotation of earth is equivalent to a whole day (24 hours). Earth's revolution is what's equivalent to the length of a year (365 1/4 days).
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Mars.
Pluto has the longest year, if it was still a planet that is, equal to 248.76 Earth years. Since Pluto is no longer considered a planet, the planet with the longest year is Neptune, at 164.8 Earth years per revolution around the Sun.
That depends on who you ask. Pluto technically has the longest year; each Plutonian year is equal to 247.7 Earth years. However, some scientists no longer consider Pluto to be a planet, and call it a "dwarf planet" instead. Since this decision was not actually binding, many people (including scientists) still consider Pluto a planet. If Pluto isn't actually a planet, then Neptune is the planet with the longest year (164.79 Earth years)
Mercury, the closest planet to the sun, has an orbital period (year) equal to 88 Earth days.
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One year on the planet Neptune is the equivalent of 164.79 years on Earth. A day on Neptune is equal to 16 hours and 6 minutes.
The dwarf planet Pluto is the planet with a year 248 earth years long.
The dwarf planet Haumea is the planet with a year 280 earth years long.
The dwarf planet Makemake is the planet with a year 310 earth years long.
In our solar system Neptune is the planet with the longest period or year - equal to about 165 Earth years.
The dwarf planet, Pluto, has a year of 247.9 Earth years.
There are no planets with a 29-day year. The shortest year is for Mercury, the closest planet to the Sun, taking 88 Earth days for one revolution.The planet with a year about equal to 29 Earth years is Saturn, which takes about 29.456 Earth years to travel once around the Sun.
Now that Pluto has been downgraded to a dwarf planet, Neptune is the most distant planet from the Sun. It takes 164.79 Earth years for Neptune to circle the Sun, so one Earth year would be about 1/165 of a Neptune year (the time it takes Neptune to circle the Sun).
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No planet has. (Planet Saturn has a year lasting about 29 Earth years.)