Neptune is the farthest major planet from the Sun, at an average distance of 4.5 billion kilometers from the Sun, 30 times farther than the Earth. This makes its orbital path around the Sun more than 30 times as long as Earth's. So even at the same speed as Earth, it would take more than 30 Earth years to make one orbit. In fact, it is much moving much more slowly than Earth, less than 1/5 the speed, and takes 164.79 Earth years.
The basis for planetary orbits is that planets closer to the Sun, regardless of their mass, must move at a higher velocity than those farther out. Mercury's orbital speed is nearly 9 times as fast as Neptune's.
Neptune is much further from the Sun, so its path is a lot longer and so it takes more time.
Jupiter has a longer year than mercury because it takes longer for it to revolve around the sun.
It takes about 59 Earth days for Mercury to complete one full rotation on its axis.
It is far away from the sun and it has more space to revolve,so the length of the summer is big.
Because the farther away a planet is from the sun the bigger its orbit is and that will make a revolution longer.example: Neptune is the farthest planet from the sun and it takes 164 earth years to revolve around the sun and Mercury is the closest planet from the sun and it takes 88 earth days to revolve around the sun.
Neptune is much further from the Sun, so its path is a lot longer and so it takes more time.
Neptune is the only planet that takes longer than Uranus to orbit the Sun.
Neptune
which planet takes the longest time to revolve around the sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto- though Pluto is no longer classed as a planet. In addition, between Mars and Jupiter is the asteroid belt and they also revolve (orbit the sun). Comets have a cigar shaped orbit but also revolve around the sun. There are many of them.
Neptune takes the longest because it is the 8th planet so it takes longer to get to the sun and because it is so big
Jupiter has a longer year than mercury because it takes longer for it to revolve around the sun.
it takes saturn longer to revolve around the sun
Of the eight planets (not counting the dwarf planet Pluto), the slowest would be Neptune - which is the furthest out. The further out you go, the slower and longer a planet takes to orbit the sun. Mercury orbits at around 48km/sec, Earth 30km/sec and Neptune 5.43 km/sec, taking 165 years to make the orbit.
It takes about 59 Earth days for Mercury to complete one full rotation on its axis.
It is far away from the sun and it has more space to revolve,so the length of the summer is big.
Because the farther away a planet is from the sun the bigger its orbit is and that will make a revolution longer.example: Neptune is the farthest planet from the sun and it takes 164 earth years to revolve around the sun and Mercury is the closest planet from the sun and it takes 88 earth days to revolve around the sun.