Moon
Neptune's largest moon, notable for orbiting backwards relative to the planet's rotation.
| Type | Moon |
|---|---|
| Orbits | Neptune |
| Distance from parent body | 354,759 km |
| Diameter | 2,707 km |
| Mass | 2.14 × 10^22 kg |
| Surface gravity | 0.78 m/s² |
| Temperature | -235°C |
| Orbital period | 6 days |
| Apparent magnitude | 13.5 |
| Redshift | 0 |
| Discovered | 1846 |
At 2,707 km across, Triton is 78 percent of the diameter of Earth's Moon.
Its mass is 0.4 percent of the mass of Earth.
It orbits Neptune at 354,759 km, closer in than the Moon orbits Earth.
A single orbit takes 5.9 days.
An average temperature of 38 K works out at -235 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 1846.
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