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Our Nearest Neighbor
Our moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate, and creating a tidal rhythm that has guided humans for thousands of years. The moon was likely formed after a Mars-sized body collided with Earth and the debris formed into the most prominent feature in our night sky.

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  About Earth's Moon Facts & Figures Earth's Moon vs. ... Missions FAQ

Comparison: Earth's Moon vs. Earth

This chart shows the differences between Earth's Moon and Earth. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

Discovered By
Known by the Ancients
Known by the Ancients
Date of Discovery
Unknown
Unknown
Average Orbit Distance
384,400 km
149,598,262 km
Perihelion/Perigee (closest)
363,104 km
147,098,291 km
Aphelion/Apogee (farthest)
405,696 km
152,098,233 km
Equatorial Radius
1737.5 km
6,371.00 km
Equatorial Circumference
10,917.0 km
40,030.2 km
Volume
21,971,669,064 km3
1,083,206,916,846 km3
Mass
73,476,730,924,573,500,000,000 kg
5,972,190,000,000,000,000,000,000 kg
Density
3.344 g/cm3
5.513 g/cm3
Surface Area
37,936,694.79 km2
510,064,472 km2
Equatorial Surface Gravity
1.624 m/s2
9.80665 m/s2
Escape Velocity
8,552 km/h
40,284 km/h
Rotation Period (Length of Day)
27.322 sidereal days
0.99726968 sidereal days
Orbit Period (Length of Year)
0.074803559 sidereal years
1.0000174 sidereal years
Mean Orbit Velocity
3,680.5 km/h
107,218 km/h
Orbit Eccentricity
0.0554
0.01671123
Orbit Inclination to Ecliptic
5.16 degrees
0.00005 degrees
Equatorial Inclination to Orbit
6.68 degrees
23.4393 degrees
Orbit Circumference
2,413,402.16 km
939,887,974 km
Minimum/Maximum Surface Temperature
-233/123 °C
-88/58 (min/max) °C

 

New planets/moons to compare:

System of measurement:

Compare All Eight Planets

Comparison: Earth's Moon vs. Earth

This chart shows the differences between Earth's Moon and Earth. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

Discovered By
Known by the Ancients
Known by the Ancients
Date of Discovery
Unknown
Unknown
Average Orbit Distance
384,400 km
149,598,262 km
Perihelion/Perigee (closest)
363,104 km
147,098,291 km
Aphelion/Apogee (farthest)
405,696 km
152,098,233 km
Equatorial Radius
1737.5 km
6,371.00 km
Equatorial Circumference
10,917.0 km
40,030.2 km
Volume
21,971,669,064 km3
1,083,206,916,846 km3
Mass
73,476,730,924,573,500,000,000 kg
5,972,190,000,000,000,000,000,000 kg
Density
3.344 g/cm3
5.513 g/cm3
Surface Area
37,936,694.79 km2
510,064,472 km2
Equatorial Surface Gravity
1.624 m/s2
9.80665 m/s2
Escape Velocity
8,552 km/h
40,284 km/h
Rotation Period (Length of Day)
27.322 sidereal days
0.99726968 sidereal days
Orbit Period (Length of Year)
0.074803559 sidereal years
1.0000174 sidereal years
Mean Orbit Velocity
3,680.5 km/h
107,218 km/h
Orbit Eccentricity
0.0554
0.01671123
Orbit Inclination to Ecliptic
5.16 degrees
0.00005 degrees
Equatorial Inclination to Orbit
6.68 degrees
23.4393 degrees
Orbit Circumference
2,413,402.16 km
939,887,974 km
Minimum/Maximum Surface Temperature
-233/123 °C
-88/58 (min/max) °C

 

New planets/moons to compare:

System of measurement:

Compare All Eight Planets