Moon Statistics / Measurements

What are the moons measurements and statistics?

Weight and Density of the moon

8 x 1019 tons
80,000,000,000,000,000,000 tons
7.347 x 1022 kg
73,470,000,000,000,000,000,000 kg

(The mass of a body is a measure of how much matter it contains. It is different to weight as weight depends on what gravity the mass is being measured in.)

Mass Ratio Earth/Moon:

(A 'Mass Ratio' is how much of one mass will fit in another.)

2.4 x 103 miles3
2.197 x 1010 km3
0.0203 Earth's volume

(Volume is amount of area the moon could hold if if were empty. It is not how loud it is :)

Mean Density:
208 lb/ft3
3.34 g/cm3
3.33 more dense than water
0.6 Earth's density

('Mean' means average)

Gravity at the Surface:
5.31 ft/sec2
1.62 m/s2
0.1667 g
1/6 Earth's gravity

Escape Velocity:
1.48 miles/sec
2.38 km/sec

(The speed needed to "break free" from the gravitational field and get into space)

Angles and Speeds of the moon

Mean Inclination to Lunar Equator:
60 41'

Mean Orbital Inclination to Ecliptic:
50 08'43"

Oscillation of orbital inclination to Equator:
00 9' every 173 days

Inclination of Lunar Equator to Ecliptic:
10 32'33"

Period of Revolution of Perigee:
3,232 days

Orbital Direction:
Counter clockwise

Mean Orbital Speed:
2,287 miles/hour
3,683 km/hr
33 minutes arc/hour

Daily Sidereal Motion:
13.176358 degrees

Mean Centripetal Acceleration:
0.01 ft/s2
0.00272 M/s2
0.0003 g

Mean Eccentricity of Orbit:
(mean eccentricity of Earths orbit is 0.0167)

Synodic Month / Average length of lunar day (new moon to new moon):
29.53059 days
29 days, 12 hr, 44 min, 2.8 sec

Sidereal Month (star to star):
27.32166 days
27 days, 7 hr, 43 min, 11.5 sec

Anomalistic Month (Apogee to Apogee or Perigee to Perigee):
27.55455 days
27 days, 13 hr, 18 min, 33.2 sec

Nodical Month, Draconic Month (Node to Node):
27.21222 days
27 days, 5 hr, 5 min, 35.8 sec

Tropical Month (First point of Aries to first point of Aries):
27.321582 days
7 days, 7 hr, 43 min, 4.7 sec

Regression of Nodes:
6,798 days
18.6247 years
19.538 degrees per year

Rotational Period:
27.321661 days
27 days, 7 hr, 43 min, 11.5 sec

Mean orbital velocity:
1.03 km/sec

Orbital eccentricity:

Tilt of axis:
1.5424 degrees

Orbital inclination:
5.1454 degrees

Size of the moon

10,930 km
6,790 miles
0.27 of Earths circumference
400 times smaller than the sun 

3,476 km
2,160 miles
0.27 of Earth's diameter
400 times smaller than the sun

Mean radius:
1,737.5 km
1,079 miles

Equatorial radius:
1,738 km
1,079 miles

Polar radius:
1,735 km
1,077 miles

Mean Angular Diameter:

Surface Area:
14,657,449 miles2
37,958,621 km2
9.4 Billion acres

Visible Surface:
41 percent during one lunar cycle
18 percent additional surface visible due to librations
59 percent total visible surface

0.9507 degrees

Angular Diameter:
0.5181 degrees

Distances of the moon

Mean distance from Earth:
384,400 km
238,712 miles
60.27 Earth radii
0.002 570 a.u.

Greatest distance from Earth (Apogee):
406,740 km
252,586 miles

Shortest distance from Earth (Perigee):
356,410 km
221,331 miles

Increase in mean distance from earth:
1.5 inches/year
3.8 cm/year

Flight time to the moon:
60-70 hours

Minimum distance from the sun:
91,238,855.1 miles

Maximum distance from the sun:
94,738,855.1 miles

Brightness of the moon

Mean Full Moon Magnitude (Vo):
-12.74 magnitude
450,000 times less bright than the Sun (-26.7)

Visual geometric albedo:
(An albedo is determined by measuring the the light shining on an object and the ratio of light that is reflected back.  If something reflects 100% of the light it has an albedo of 1.)

Average Albedo (reflective percentage):
(it reflects about 7% of the sun's light)

Light travel from the sun to the moon:
 8.28 minutes (light-minutes)

Light travel from the moon to earth:
1.255 seconds (light-seconds)

Temperature of the moon

Mean surface temperature (day):

Mean surface temperature (night):

Maximum surface temperature:

Minimum surface temperature:

History of the moon

Age of moon:
Scientific estimate - 4.6 billion years
Biblical claim - 6000 years

Scientific estimate - This has changed several times and is still disputed. From Fission hypothesis, to Capture hypothesis, to Co-formation hypothesis to one of the
current estimates: Giant impact hypothesis - that is, Earth being impacted with an object the size of mars came to form the moon.
Biblical claim - created by God on the fourth day of creation. Genesis chapter 1, verses 14 to 19
Qur'an's claim - created by Allah

First visited by humans
July 20, 1969