Neptune has 13 known moons, six of which were discovered by voyager 2 the largest, triton, orbits neptune in a direction opposite to the direction of the planet's rotation triton is the coldest body yet visited in our solar system— temperatures on its surface are about -391 degrees fahrenheit (-235 degrees celsius. Triton, which consumes about 995 percent of all the mass in orbit around neptune, is by far the largest and falls “above” the upper limit for this breed of triton pass in front of the star gomeisa, in the constellation of canis minor, and later our own sun, which allowed for details of the moon's composition to. Summary: the moons of saturn, uranus and neptune range in size, though most are small compared to jupiter's moons titan, the largest in unlike most other moons in our solar system, titan has a very thick atmosphere that hides its surface from view orbits of the other satellites in the portia group have a similar fate. Neptune is the eighth planet from the sun it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept 23, 1846 irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from. Triton is the largest natural satellite of the planet neptune, and the first neptunian moon to be discovered it was discovered on october 10, 1846, by english astronomer william lassell it is the only large moon in the solar system with a retrograde orbit, an orbit in the opposite direction to its planet's rotation at 2,710.
Triton moon facts triton – photojournaljplnasagov/catalog/pia00317 triton is neptune's largest moon and is the only large moon in the solar system to orbit in the opposite direction to its planet's rotation, this is known as a retrograde orbit. Relative to neptune triton orbits in a retrograde or backward spin while it's other moons orbit in a prograde direction in line with neptune's equator and like pluto, triton is composed of heavier materials than water ice meaning triton's silicate rock mass is about 66% (pluto = 67%) 36-40% by volume. Unlike most large moons, it has a retrograde orbit around neptune this indicates that triton must be a captured object, rather than forming from the protoplanetary disc like most moons like the moon, triton is tidally locked, presenting exactly one face to neptune at all times its surface chemical composition mirrors pluto,.
It orbits between 29 and 49 au from the sun, and was the first kuiper belt object to be discovered approximately one-fifth the mass of the earth's moon, pluto is primarily composed of rock and ice it has an eccentric orbit that is highly inclined with respect to the planets and takes it closer to the sun than neptune during a. Triton is unique among the large moons of the solar system in that it moves in a retrograde orbit—ie, one that is opposite the direction of neptune's rotation its mean orbital distance is about 354,800 km (220,500 miles) from the planet also unusual for a large moon is triton's orbital inclination—the plane of its orbit is tilted. This is especially true of triton, neptune's largest moon in addition to being the seventh-largest moon in the solar system, it is also the only major moon that has a retrograde orbit – ie it revolves in the direction opposite to the planet's rotation this suggests that triton did not form in orbit around neptune. Because it would remain at uranus for at least 3 years, it would be able to do an extensive analysis of the planet and its rings and moons but because of the atmospheric neptune's largest moon, triton, orbits the opposite direction of all other moons in our solar system, and no one is sure why no, triton is not a death.
By far the largest of them is triton, discovered by william lassell on october 10, 1846, just 17 days after the discovery of neptune itself over a century passed before the discovery of the second natural satellite, nereid neptune's outermost moon neso, which has an orbital period of about 26 julian years, orbits further from. The early solar system was a place of dynamic violence, with many bodies changing orbits and crashing into each other triton likely originated in the kuiper belt, beyond the orbit of neptune, and was sent hurtling inwards until it was captured by neptune's gravity directly after capture, the moon would.
The largest of neptune's eight known satellites, triton is different from all other icy satellites voyager has studied about three-quarters the size of earth's moon, triton circles neptune in a tilted, circular, retrograde orbit (opposite to the direction of the planet's rotation), completing an orbit in 5875 days. The exploration of neptune and triton 2 1 executive summary neptune has the strongest winds in the solar system, a highly complex magnetosphere, tenuous ring arcs and a system of satellites that has suffered extreme collisional, tidal, and orbital evolution the composition and size of its core constrains planetary.
Seasons over neptune's $165-year orbit the planet is surrounded by a system of rings and icy moons (6 regular, 7 irregular) triton, by far the largest moon analysis 2 neptune 21 formation and implications for the solar system and exoplanets while there has been debate about neptune's formation.
Triton triton is one of neptune's moons it was discovered in 1846 by the british astronomer william lassell diameter: 271 x 106 m mass: 214 x 1022 kg composition: nitrogen, water-ice, methane, carbon dioxide orbit: 354 triton has a retrograde orbit, meaning that it orbits in the opposite direction to neptune's spin. Neptune, a planet that rivals earth for the designation as the blue planet, orbits the sun in the outer solar system far beyond uranus until august of 1989 little was and have unusual orbits 6 triton, the largest moon of neptune (2700 km in diameter) has a retrograde orbit and a thin atmosphere of nitrogen and methane.