Galilean moons + Includes
| Callisto |
Albedo
0.2
Apoapsis
1,896,632 km (0.0127 AU, 1,178,512.487 mi)
Color
#995555
Composition
60% rock and 40% ice
Date of discovery
7 January 1610
Escape speed
2.45 km/s (8,820 km/h, 1.522 mi/s, 5,480.494 mph)
Inclination
0.0049 rad (0.281 °, 0.312 grad)
Lunar mass
1.076e+23 kg (1.464 M☾, 0.018 M⊕)
Lunar surface area
73,004,909 km² (28,187,352.949 mi², 1.925 A☾, 0.143 A⊕)
Maximum temperature
168 K (-105.15 °C, -157.27 °F, 302.4 °R)
Mean radius
2,410.3 km (1,497.691 mi)
Mean temperature
126 K (-147.15 °C, -232.87 °F, 226.8 °R)
Orbital eccentricity
0.0074
Orbital speed
8.21 km/s (29,556 km/h, 5.101 mi/s, 18,365.247 mph)
Order
8
Periapsis
1,868,768 km (0.0125 AU, 1,161,198.6 mi)
Planet density
1,834 kg/m³ (1.834 g/ml, 114.493 lb/ft³)
Rotation speed
0.0105 km/s (37.8 km/h, 0.00652 mi/s, 23.488 mph)
Semi-major axis
1,882,700 km (0.0126 AU, 1,169,855.544 mi)
Sidereal day
400.536 h (16.689 da)
Sidereal period
16.689 da (0.0457 a)
Surface gravity
1.236 m/s² (4.054 ft/s², 0.126 g)
Discoverer
Simon Marius +, Galileo Galilei +
Member of
Moon +, Galilean moons +
Primary
Jupiter +
Categories Astronomy +, Moon +, Solar system +
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