| Albedo
|
0.76 +
|
| Apoapsis
|
354,766 km (0.00237 AU, 220,441.372 mi) +
|
| Axial tilt
|
0 rad (0 °, 0 grad) +
|
| Color
|
#FF9999 +
|
| Date of discovery
|
10 October 1846 +
|
| Discoverer
|
William Lassell +
|
| Escape speed
|
1.453 km/s (5,229.36 km/h, 0.903 mi/s, 3,249.374 mph) +
|
| Inclination
|
2.746 rad (157.345 °, 174.828 grad) +
|
| Lunar mass
|
2.14e+22 kg (0.291 M☾, 0.00358 M⊕) +
|
| Lunar surface area
|
23,017,715 km² (8,887,189.446 mi², 0.607 A☾, 0.0451 A⊕) +
|
| Mean radius
|
1,353.4 km (840.964 mi) +
|
| Mean temperature
|
34.5 K (-238.65 °C, -397.57 °F, 62.1 °R) +
|
| Member of
|
Moon +,
Solar system +
|
| Orbital eccentricity
|
1.6e-5 +
|
| Order
|
7 +
|
| Periapsis
|
354,754 km (0.00237 AU, 220,433.916 mi) +
|
| Planet density
|
2,050 kg/m³ (2.05 g/ml, 127.977 lb/ft³) +
|
| Primary
|
Neptune +
|
| Semi-major axis
|
354,760 km (0.00237 AU, 220,437.644 mi) +
|
| Sidereal day
|
-141.044 h (-5.877 da) +
|
| Sidereal period
|
-5.877 da (-0.0161 a) +
|
| Surface gravity
|
0.78 m/s² (2.558 ft/s², 0.0795 g) +
|
| Visiting mission
|
Voyager 2 +
|
| Categories |
Astronomy +,
Solar system +,
Moon +,
Neptune +
|
