Answer:
Neptune
Step-by-step explanation:
The solar system is made up of the sun with its associated planets, asteroids, meteors, satellites (i.e.,moons), and comets orbits around it. The Sun is a yellow dwarf star. Its gravity holds the solar system together, keeping everything in its orbit.
Although Neptune travels at a very high speed of 5.43 km/s, Neptune still has the slowest orbital velocity of any of the planets.