one direction
Neptune has an odd orbital property. The orbit of Neptune crosses the orbital path of the dwarf planet Pluto, so there are times when Pluto is closer to the Sun than Neptune.
According to http://solarsystem.nasa.gov/planets/, Venus has an orbital velocity of 78,341 mph, and Neptune's is 12,253 mph...
The orbital inclination of Neptune is approximately 1.77 degrees relative to the plane of the ecliptic, which is the plane in which Earth orbits the Sun. This means that Neptune's orbit is tilted by around 1.77 degrees compared to the average plane of the solar system.
Neptune takes longer to orbit the sun than Mars. Neptune's orbital period is about 165 Earth years, while Mars' orbital period is about 1.88 Earth years.
Pluto is sometimes closer to the Sun than Neptune.
Yes with pluto
It's an ellipse.
164 years
Triton, the largest moon of Neptune, has an orbital period of about 5.9 Earth days. It orbits Neptune in a retrograde direction, meaning it moves in the opposite direction of the planet's rotation. This unique orbital motion is thought to be the result of Triton being a captured object from the Kuiper Belt.
Neptune spins at a equatorial rate of 2.68 km/sec, or a velocity of 9,660 km/hr (6000 mph).
5.43 km per second.
Mercury has the slowest orbital velocity around the sun compared to the other planets in our solar system. Its average orbital speed is about 47.87 km/s.