Moon

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Taken from: Wikipedia

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Designations
Adjective	lunar, selenic
Orbital characteristics
Perigee	363,295 km (0.0024 AU)
Apogee	405,503 km (0.0027 AU)
Semi-major axis	384,399 km (0.00257 AU)[1]
Eccentricity	0.0549[1]
Orbital period	27.321582 d (27 d 7 h 43.1 min[1])
Synodic period	29.530589 d (29 d 12 h 44 min 2.9 s)
Average orbital speed	1.022 km/s
Inclination	5.145° to the ecliptic[2] (between 18.29° and 28.58° to Earth's equator)[1]
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][3]
Equatorial radius	1,738.14 km (0.273 Earths)[3]
Polar radius	1,735.97 km  (0.273 Earths)[3]
Flattening	0.00125
Circumference	10,921 km (equatorial)
Surface area	3.793 × 107 km2  (0.074 Earths)
Volume	2.1958 × 1010 km3  (0.020 Earths)
Mass	7.3477 × 1022 kg  (0.012300 Earths[1])
Mean density	3.3464 g/cm3[1]
Equatorial surface gravity	1.622 m/s2 (0.165 4 g)
Escape velocity	2.38 km/s
Sidereal rotation period	27.321582 d (synchronous)
Equatorial rotation velocity	4.627 m/s
Axial tilt	1.5424° (to ecliptic) 6.687° (to orbit plane)[2]
Albedo	0.136[4]
Surface temp. min mean max equator 100 K 220 K 390 K 85°N[5] 70 K 130 K 230 K
Apparent magnitude	−2.5 to −12.9[a] −12.74 (mean full moon)[3]
Angular diameter	29.3 to 34.1 arcminutes[3][b]
Atmosphere[6]
Surface pressure	10−7 Pa (day) 10−10 Pa (night)[c]
Composition	Ar, He, Na, K, H, Rn