Triton
type: Concept
broader: Neptunian satellites
modified: 2020-12-03T17:31:59.661Z
modified: 2020-12-03T17:32:11.41Z
contributor: AAS Frey.Katie Admin
creator: AAS Frey.Katie Admin
created: 2020-12-03T17:31:41.069Z
definition: The seventh and the largest of Neptune's satellites. It has a diameter of 2,700 km and orbits its planet at a mean distance of 354,760 km every 5.877 days. Triton was discovered by William Lassell in 1846 scarcely a month after Neptune was discovered. Triton is colder than any other measured object in the solar system with a surface temperature of -235° C. It has an extremely thin atmosphere. Nitrogen ice particles might form thin clouds a few kilometers above the surface. The atmospheric pressure at Triton's surface is about 15 microbars, 0.000015 times the sea-level surface pressure on Earth. Triton is the only large satellite in the solar system to circle a planet in a retrograde motion, that is in a direction opposite to the rotation of the planet.

Neptunian satellites
type: Concept
narrower: Triton