| Albedo
|
0.63 +
|
| Apoapsis
|
423,529 km (0.00283 AU, 263,168.72 mi) +
|
| Color
|
#CCDD11 +
|
| Composition
|
silicate rock and iron +
|
| Creation magnetic moment
|
2.1e+22 N-m/T +
|
| Date of discovery
|
7 January 1610 +
|
| Discoverer
|
Galileo Galilei +,
Simon Marius +
|
| Escape speed
|
2.558 km/s (9,208.98 km/h, 1.589 mi/s, 5,722.195 mph) +
|
| Inclination
|
6.98132e-4 rad (0.04 °, 0.0444 grad) +
|
| Lunar mass
|
8.93194e+22 kg (1.216 M☾, 0.0149 M⊕) +
|
| Lunar surface area
|
41,698,065 km² (16,099,712.904 mi², 1.1 A☾, 0.0817 A⊕) +
|
| Magnetic decay time
|
1,098.14 a (401,095.635 da) +
|
| Magnetic half life
|
761.17 a (278,017.343 da) +
|
| Mean radius
|
1,821.6 km (1,131.89 mi) +
|
| Mean temperature
|
130 K (-143.15 °C, -225.67 °F, 234 °R) +
|
| Member of
|
Moon +,
Solar system +,
Galilean moons +
|
| Orbital eccentricity
|
0.0041 +
|
| Orbital speed
|
17.34 km/s (62,424 km/h, 10.775 mi/s, 38,788.475 mph) +
|
| Order
|
5 +
|
| Periapsis
|
420,071 km (0.00281 AU, 261,020.018 mi) +
|
| Planet density
|
3,528 kg/m³ (3.528 g/ml, 220.246 lb/ft³) +
|
| Present magnetic moment
|
7.86e+19 N-m/T +
|
| Primary
|
Jupiter +
|
| Rotation speed
|
0.0749 km/s (269.568 km/h, 0.0465 mi/s, 167.502 mph) +
|
| Semi-major axis
|
421,800 km (0.00282 AU, 262,094.369 mi) +
|
| Sidereal day
|
42.456 h (1.769 da) +
|
| Sidereal period
|
1.769 da (0.00484 a) +
|
| Surface gravity
|
1.796 m/s² (5.893 ft/s², 0.183 g) +
|
| Surface magnetic flux density
|
1.3e-6 T +
|
| Visiting mission
|
Pioneer 10 +,
Pioneer 11 +,
Voyager 1 +,
Voyager 2 +,
Galileo project +,
New Horizons mission +
|
| Categories |
Astronomy +,
Solar system +,
Moon +,
Jupiter +
|
