Neptune in Science,Astronomy,Solar System,Planets

Neptune

Neptune has a diameter of 49,532 km. Its distance from Earth is 4,304 - 4,688 million km and from the Sun 4,456 - 4,537 million km. Its rotation is 18 hours and 12 minutes and its orbital period around the Sun is 165 years and 5 months.

Similar to Uranus, the structure of Neptune consists of rock and ice with a hydrogen content of approx. 15%. It is also a gas planet whose surface has not been explored.

Its atmosphere consists of hydrogen (83%), helium (15%) and methane (2%).

Its 8 moons:

Naidad has a diameter of 58 km and is 48,227 km from Neptune. Its orbital period around Neptune is 7 hours and 3 minutes.
Thalassa has a diameter of 80 km and is 50,075 km from Neptune. Its orbital period around Neptune is 7 hours and 28 minutes.
Despina has a diameter of 148 km and is 52,526 km away from Neptune. Its orbital period around Neptune is 8 hours and 1 minute.
Galatea has a diameter of 158 km and is 61,953 km from Neptune. Its orbital period to Neptune is 10 hours and 17 minutes.
Larissa has a diameter of 193 km and is 73,548 km from Neptune. Its orbital period around Neptune is 13 hours and 18 minutes.
Proteus has a diameter of 418 km and is 117,647 km from Neptune. Its orbital period around Neptune is 1 day, 2 hours and 56 minutes.
Triton has a diameter of 2,705 km and is 354,760 km away from Neptune. Its orbital period around Neptune is 5 days, 21 hours and 2 minutes.
Nereid has a diameter of 340 km and is 1.3 to 9.6 million km away from Neptune. Its orbital period around Neptune is 11 months, 25 days and 13 hours.