Neptune takes nearly 165 Earth years to orbit the sun. Neptune is the eighth planet from the sun. The distance from the sun is about 4.5 billion km which is 2.8 billion miles or 30.07 AU. Neptune orbits the sun in an ellipse. The distance from the star is continuously changing. Pluto sporadically dips inside of Neptune's orbit. When Pluto was characterized as a planet, it was occasionally the eighth most distant planet while Neptune was ninth most distant. Neptune is the fourth biggest planet in terms of diameter. The average distance from the middle of the planet to its surface is 15,299 miles. Neptune has a shape referred to as an oblate spheroid. The average diameter across the planet is 30,598 miles. This is almost 4 times as much as the diameter that Earth's is. The time is takes for Neptune to rotate or spin once is 16 hours for one day. Neptune has many different physical characteristics. Neptune consists of molten rock and metal. It's blended by rock, water, ammonia, and methane. Methane is a colorless gas that is flammable and doesn't have an odor. It's the simplest member of the Alkane series of hydrocarbons. The atmosphere is normally hydrogen and helium at high altitudes. Although it has rising concentrations of ammonia, methane and water as it gets closer to and ultimately blends into the liquid interior. The planet has dark blue and bright white features of the atmosphere that help distinguish Neptune from Uranus. There is thin white clouds that have methane ice. When the hydrocarbon snowflakes develop in Neptune's atmosphere they dissolve before reaching the surface of the high pressure. Neptune's mass is Mass: 102,410,000,000,000,000 billion kg (17.15x Earth). The diameter at Equator is 49,528 km. The surface temperature is -201 degrees Celsius. The orbital distance is 4,498,396,441 km. One of Neptune's moons is Triton. The Diameter is 2.71 x 106 m. The mass is 2.14 x 1022 kg. The composition is Nitrogen, water ice , methane, and Carbon Dioxide. The moon has the color red because of Tholins. Tholins are organic compounds that are made by the UV irradiation of Ethane and Methane. The interior has a small rocky core and a liquid water layer. The surface of Triton is moderately flat, despite having qualities like ridges, furrows, plateaus, plains, and some craters. Triston is colder than all the objects in the Solar System because it has a surface temperature of -391 degrees Fahrenheit. The surface Gravity on Neptune is 0.779 m/s². The surface area is Metric: 23,017,714.99 km2. The surface mass is Metric: 21,394,990,550,895,500,000,000 kg Scientific Notation: 2.1395 x 1022 kg. There are 5 rings on Neptune, for instance Galle, Le Verrier, Lassell, Arago, and Adams. The rings are made of at least 20% dust. Some of the rings have as much as 70% dust. The ring Galle is the ring that is closest to Neptune. The distance is roughly 41,000 km away from the surface. 2,000 km in width is the estimation. This ring is made of mostly particles of dust which is 40% of the rings material at least. Le Verrier Ring is very narrow that is 113 km wide. It orbits 53,200 km away from Neptune. It's mostly made of dust. Lassell ring is the widest ring out of them all. It has a width that is two times that of the Galle ring. 20%-40% is the dust composition |