Galilean moons + Includes
| Ganymede |
Albedo
0.43
Apoapsis
1,071,792 km (0.00716 AU, 665,980.673 mi)
Axial tilt
0.00576 rad (0.33 °, 0.367 grad)
Color
#886655
Composition
Rock and ice
Creation magnetic moment
3.49e+22 N-m/T
Date of discovery
7 January 1610
Escape speed
2.742 km/s (9,869.4 km/h, 1.703 mi/s, 6,132.561 mph)
Inclination
0.0034 rad (0.195 °, 0.217 grad)
Lunar mass
1.48186e+23 kg (2.017 M☾, 0.0248 M⊕)
Lunar surface area
86,999,666 km² (33,590,758.835 mi², 2.294 A☾, 0.171 A⊕)
Magnetic decay time
1,099.06 a (401,431.665 da)
Magnetic half life
761.81
Maximum temperature
152 K (-121.15 °C, -186.07 °F, 273.6 °R)
Mean radius
2,631.2 km (1,634.952 mi)
Mean temperature
110 K (-163.15 °C, -261.67 °F, 198 °R)
Minimum temperature
70 K (-203.15 °C, -333.67 °F, 126 °R)
Orbital eccentricity
0.013
Orbital speed
10.88 km/s (39,168 km/h, 6.761 mi/s, 24,337.867 mph)
Order
7
Periapsis
1,069,008 km (0.00715 AU, 664,250.775 mi)
Planet density
1,942 kg/m³ (1.942 g/ml, 121.235 lb/ft³)
Present magnetic moment
1.31e+20 N-m/T
Rotation speed
0.0267 km/s (96.264 km/h, 0.0166 mi/s, 59.816 mph)
Semi-major axis
1,070,400 km (0.00716 AU, 665,115.724 mi)
Sidereal day
171.72 h (7.155 da)
Sidereal period
7.155 da (0.0196 a)
Surface gravity
1.428 m/s² (4.686 ft/s², 0.146 g)
Surface magnetic flux density
7.19e-7 T
Discoverer
Simon Marius +, Galileo Galilei +
Member of
Galilean moons +, Moon +
Primary
Jupiter +
Categories Astronomy +, Moon +, Solar system +
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