The period or rotation and revolution - Neptune takes 165 years to orbit the sun . Average distance from the sun - Neptune average distance is 2.795 billion mi.
The diameter or size of the planet - The diameter of Neptune is 49,500 km
Origin of the planet’s name -Neptune was the god of the sea in roman mythology equivalent to the Greek god.
Average surface temperature or range of temperature - Neptune’s average temperature is minus 353 F .