Voyager 2 photomosaic, showing large cracks in darker areas, ice volcanoes in lighter areas.
Closeup of portion of photomosaic, showing nitrogen and dust plumes pushed downwind by the thin atmosphere.
A smooth "lake" presumably caused by ice volcanism.
|Data for Triton|
Discovered by William Lassell in 1846, shortly after Neptune's discovery
Named after Triton, the mythological son of Poseidon and Amphitrite
Orbital size 354,800 km (about 220,000 miles)
Orbital eccentricity 0
Orbital inclination 157 degrees = -23 degrees (retrograde revolution)
Orbital period -5.87685 days (retrograde revolution)
Rotational period -5.87685 days (synchronous rotation)
Mass 0.00358 Earth masses
Diameter about 2700 km (about 1675 miles)
Density 2.07 g/cc (implies substantial amounts of rock and ice)
Escape velocity 1.45 km/sec
Albedo (reflectivity) 70%
Mean surface temperature -235 Celsius (-390 Fahrenheit)