state the mass and radius of the Moon the Earth and the Sun
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Moon
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This article is about Earth's natural satellite. For moons in general, see Natural satellite. For other uses, see Moon (disambiguation).
The Moon is a rounded astronomical body of planetary mass, rocky silicate composition and without significant atmosphere, hydrosphere or magnetic field. It is orbiting the planet Earth of the inner Solar System, as Earth's only natural satellite. Its surface gravity is about a sixth of Earth's with 0.1654 g. At an average orbital distance to Earth 384,402 km (238,856 mi),[13][14] or 1.28 light-seconds (about thirty times the diameter of Earth) its gravitational influence produces the main part of any type of Earth's tides, possibly Earth's magnetic field[15] and the slight lengthening of Earth's day.
Moon
Full moon seen from Earth
Designations
Designation
Earth I
Alternative names
Luna
Selene (poetic)
Cynthia (poetic)
Adjectives
Lunar
Selenian (poetic)
Cynthian (poetic)
Orbital characteristicsEpoch J2000Perigee362600 km
(356400–370400 km)Apogee405400 km
(404000–406700 km)
Semi-major axis
384399 km (0.00257 AU)[1]Eccentricity0.0549[1]
Orbital period
27.321661 d
(27 d 7 h 43 min 11.5 s[1])
Synodic period
29.530589 d
(29 d 12 h 44 min 2.9 s)
Average orbital speed
1.022 km/sInclination5.145° to the ecliptic[2][a]
Longitude of ascending node
Regressing by one revolution in 18.61 years
Argument of perigee
Progressing by one
revolution in 8.85 years
Satellite ofEarth[b][3]Physical characteristics
Mean radius
1737.4 km
(0.2727 of Earth's)[1][4][5]
Equatorial radius
1738.1 km
(0.2725 of Earth's)[4]
Polar radius
1736.0 km
(0.2731 of Earth's)[4]Flattening0.0012[4]Circumference10921 km (equatorial)
Surface area
3.793×107 km2
(0.074 of Earth's)Volume2.1958×1010 km3
(0.020 of Earth's)[4]Mass7.342×1022 kg
(0.012300 of Earth's)[1][4][6]
Mean density
3.344 g/cm3[1][4]
0.606 × Earth
Surface gravity
1.62 m/s2 (0.1654 g)[4]
Moment of inertia factor
0.3929±0.0009[7]
Escape velocity
2.38 km/s
(8600 km/h; 5300 mph)
Sidereal rotation period
27.321661 d (synchronous)
Equatorial rotation velocity
4.627 m/s
Axial tilt
Answer:
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