MOON.
A familiar world. An extraordinary journey.
SCHEMATIC / NOT A SURFACE MAP
01 /
The measured world
- Mean radius
- 1,737.4 km
- Mean diameter
- 3,474.8 km
- Mass
- 7.342e+22 kg
- Gravity
- 1.62 m/s²
- Escape velocity
- 2.38 km/s
- Rotation period
- 655.72 Earth hours
- Orbit around Earth
- 27.322 Earth days
- Mean distance from Sun
- 1 AU
- Reported moons
- 0
Rounded reference values. Rotation is sidereal and differs from the solar day. Giant planets have no solid surface; temperature and gravity use atmospheric reference levels. Some moon counts are omitted because discoveries change them.
Compare with EarthA closer look
The same hemisphere always faces Earth.
Its mean distance from Earth is about 384,400 km.
Atmosphere
A very thin exosphere.
Discovery
Known since antiquity.