Alone among all the large moons, Triton orbits Neptune retrograde, and also at a 20 degree inclination to Neptune's equator.

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Triton is unique among the large moons in the Solar System because it orbits Neptune in a retrograde direction, meaning it moves in the opposite direction of Neptune's rotation. Additionally, Triton's orbit is inclined at about 20 degrees relative to Neptune's equator, further distinguishing its orbital characteristics from those of other large moons.

Alone Among All the Large Moons, Triton Orbits Neptune Retrograde