Galilean moons + Includes
| Europa |
Albedo
0.64
Apoapsis
677,408 km (0.00453 AU, 420,921.817 mi)
Axial tilt
2.79253e-4 rad (0.016 °, 0.0178 grad)
Color
#EEFFFF
Composition
Water ice and rock
Creation magnetic moment
1.13e+22 N-m/T
Date of discovery
7 January 1610
Escape speed
2.02 km/s (7,272 km/h, 1.255 mi/s, 4,518.611 mph)
Inclination
0.0082 rad (0.47 °, 0.522 grad)
Lunar mass
4.8e+22 kg (0.653 M☾, 0.00803 M⊕)
Lunar surface area
30,612,893 km² (11,819,704.067 mi², 0.807 A☾, 0.06 A⊕)
Magnetic decay time
861.93 a (314,819.932 da)
Magnetic half life
597.45 a (218,218.612 da)
Maximum temperature
110 K (-163.15 °C, -261.67 °F, 198 °R)
Mean radius
1,560.8 km (969.836 mi)
Minimum temperature
50 K (-223.15 °C, -369.67 °F, 90 °R)
Orbital eccentricity
0.0094
Orbital speed
13.74 km/s (49,464 km/h, 8.538 mi/s, 30,735.505 mph)
Order
6
Periapsis
664,792 km (0.00444 AU, 413,082.598 mi)
Planet density
3,013 kg/m³ (3.013 g/ml, 188.095 lb/ft³)
Present magnetic moment
9.13e+18 N-m/T
Rotation speed
0.032 km/s (115.056 km/h, 0.0199 mi/s, 71.492 mph)
Semi-major axis
671,100 km (0.00449 AU, 417,002.207 mi)
Sidereal day
85.228 h (3.551 da)
Sidereal period
3.551 da (0.00972 a)
Surface gravity
1.324 m/s² (4.344 ft/s², 0.135 g)
Surface magnetic flux density
2.4e-7 T
Discoverer
Galileo Galilei +, Simon Marius +
Member of
Moon +, Galilean moons +
Primary
Jupiter +
Categories Astronomy +, Moon +, Solar system +
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