 | ||||||||||
| Designations | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Adjective | "lunar" | |||||||||
| Perigee | 363 104 km (0.002 4 AU) | |||||||||
| Apogee | 405 696 km (0.002 7 AU) | |||||||||
| Semi-major axis | 384 399 km (0.002 57 AU[1]) | |||||||||
| Eccentricity | 0.054 9[1] | |||||||||
| Orbital period | 27.321 582 d (27 d 7 h 43.1 min[1]) | |||||||||
| Synodic period | 29.530 588 d (29 d 12 h 44.0 min) | |||||||||
| Average orbital speed | 1.022 km/s | |||||||||
| Inclination | 5.145° to the ecliptic[1] (between 18.29° and 28.58° to Earth's equator) | |||||||||
| Longitude of ascending node | regressing by one revolution in 18.6 years | |||||||||
| Argument of perigee | progressing by one revolution in 8.85 years | |||||||||
| Satellite of | Earth | |||||||||
| Physical characteristics | ||||||||||
| Mean radius | 1 737.10 km (0.273 Earths)[1][2] | |||||||||
| Equatorial radius | 1 738.14 km (0.273 Earths)[2] | |||||||||
| Polar radius | 1 735.97 km (0.273 Earths)[2] | |||||||||
| Flattening | 0.001 25 | |||||||||
| Circumference | 10 921 km (equatorial) | |||||||||
| Surface area | 3.793 × 107 km² (0.074 Earths) | |||||||||
| Volume | 2.195 8 × 1010 km³ (0.020 Earths) | |||||||||
| Mass | 7.347 7 × 1022 kg (0.012 3 Earths[1]) | |||||||||
| Mean density | 3 346.4 kg/m³[1] | |||||||||
| Equatorial surface gravity | 1.622 m/s² (0.165 4 g) | |||||||||
| Escape velocity | 2.38 km/s | |||||||||
| Sidereal rotation period | 27.321 582 d (synchronous) | |||||||||
| Equatorial rotation velocity | 4.627 m/s | |||||||||
| Axial tilt | 1.542 4° (to ecliptic) 6.687° (to orbit plane) | |||||||||
| Albedo | 0.12 | |||||||||
| Surface temp. equator 85°N[5] |
| |||||||||
| Apparent magnitude | −2.5 to −12.9[3] −12.74 (mean full moon)[2] | |||||||||
| Angular diameter | 29.3 to 34.1 arcminutes[2][4] | |||||||||
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