Planet Neptune is 2.80 billion miles (4.50 billion km) from the sun.
It gets as close as 4,452,940,833 km and as far as 4,553,946,490 km.
From Universe Today, Neptune, which is one of the giant planets... "...[has] a diameter of 49,500 km."
The diameter of Planet Uranaus is 51,118 km, and the diameter of Neptune is 49,528 km.
Their mean radii are:Jupiter: 69,911 km Saturn: 58,232 km Uranus: 25,362 km Neptune: 24,622 km.
The circumference is about 155609 KM (equitorial).96,685 miles (155,600 km).
Neptune has 5 rings * Adams Ring at 63000 km from the centre of Neptune * Le Verrier Ring at 53000 km * Galle Ring, at 42000 km. * Arago * Lassell - a faint outward extension of the Le Verrier Ring
Neptune spins at a equatorial rate of 2.68 km/sec, or a velocity of 9,660 km/hr (6000 mph).
Here are all diameters of the planets. Mercury 4,880 km Venus 12,104 km Earth 12,756 km Mars 6,794 km Jupiter 142,984 km Saturn 120,536 km Uranus 51,118 km Neptune 49,532 km (Pluto is not classed as a planet anymore)
Neptune has a diameter of about 49,520 km at its equator.
Neptune's speed is:Orbital: 5.43 km/sRotational: 2.68 km/s
Jupiter is 741,000,000 km away. Uranus is2,870,000,000 km away. Neptune is 4,500,000,000 km away from the sun.
Saturn is bigger than Neptune. Saturn is the second-largest planet in our solar system, while Neptune is the fourth-largest. Saturn has a diameter of about 116,464 km, while Neptune has a diameter of about 49,244 km.