Triton
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| Triton | |
 | |
| Planetary characteristics | |
|---|---|
| Orbit | 354,759 km from Neptune |
| Diameter | 1,350 km |
| Surface Gravity | 0.078 G |
| Day | n/a (synchronous with primary) |
| Mean Temperature | ~38 K (mean) |
| Atmosphere | trace nitrogen/methane |
Triton, also known as Neptune I, is the largest moon of Neptune. Its retrograde orbit indicates it is a captured object, probably originating from the Kuiper Belt.
Triton was discovered discovered on October 10, 1846 by William Lassell. It is named after the Greek sea god Triton.
The Soviet Air Force research vessel Ptichka was the first ship to make a Tritonian landing.
