Template:Planet Infobox/Moon
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< Template:Planet Infobox
The Moon as seen by an observer from Earth | ||||||||||
Orbital characteristics | ||||||||||
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Semi-major axis | 384,399 km (0.00257 AU) | |||||||||
Perigee | 363,104 km (0.0024 AU) | |||||||||
Apogee | 405,696 km (0.0027 AU) | |||||||||
Orbital circumference | 2,413,402 km (0.016 AU) | |||||||||
Eccentricity | 0.0549 | |||||||||
Revolution period (Sidereal period) |
27.321 582 d (27 d 7 h 43.1 min) |
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Synodic period | 29.530 588 d (29 d 12 h 44.0 min) |
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Avg. orbital speed | 1.022 km/s (2286 mi/h) | |||||||||
Max. orbital speed | 1.082 km/s (2420 mi/h) | |||||||||
Min. orbital speed | 0.968 km/s (2165 mi/h) | |||||||||
Inclination | between 18.29° and 28.58° to Earth equatorial plane; 5.145° to ecliptic |
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Longitude of the ascending node |
regressing, 1 revolution in 18.6 years |
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Argument of perigee | progressing, 1 revolution in 8.85 years |
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Satellite of | Earth | |||||||||
Physical characteristics | ||||||||||
Equatorial diameter | 3,476.28 km (0.273 Earths) | |||||||||
Polar diameter | 3,471.94 km (0.273 Earths) | |||||||||
Oblateness | 0.00125 | |||||||||
Surface area | 3.793×107 km² (0.074 Earths) | |||||||||
Volume | 2.1958×1010 km³ (0.020 Earths) | |||||||||
Mass | 7.3477×1022 kg (0.0123 Earths) | |||||||||
Mean density | 3,346.4 kg/m3 | |||||||||
Equatorial gravity | 1.622 m/s2 (0.1654 g) | |||||||||
Escape velocity | 2.38 km/s (5324 mi/h) | |||||||||
Rotation period | 27.321 582 d (synchronous) | |||||||||
Rotation velocity (at the equator) |
4.627 m/s (10.349 mi/h) | |||||||||
Axial tilt | 6.688° to orbit plane 1.543° to ecliptic |
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Albedo | 0.12 | |||||||||
Magnitude | up to -12.74 | |||||||||
Angular size | from 29′to 33′ | |||||||||
Surface temp. (equator) (85°N) |
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Adjective | lunar | |||||||||
Bulk silicate composition (estimated wt%) | ||||||||||
SiO2 | 44.4 % | |||||||||
Al2O3 | 6.14 % | |||||||||
FeO | 10.9 % | |||||||||
MgO | 32.7 % | |||||||||
CaO | 4.6 % | |||||||||
Na2O | 0.092 % | |||||||||
K2O | 0.01 % | |||||||||
Cr2O3 | 0.61 % | |||||||||
MnO | 0.15 % | |||||||||
TiO2 | 0.31 % | |||||||||
Atmospheric characteristics | ||||||||||
Atmospheric density | 107 particles cm-3 (day) 105 particles cm-3 (night) |
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