Planetary body
- Name
- Moon
- Secondary names
- Luna, Selene, Cynthian
- Family
- satellite
- Dynamic family
- regular
- Central body
- Earth
- Physical type
- telluric
- Periapsis
- 362600.0 $km$
- Apoapsis
- 405400.0 $km$
- Semimajor axis
- 384399.0 $km$ (0.003 $AU$)
- Eccentricity
- 0.0549
- Inclination to ecliptic
- 5.145°
- Axial tilt
- 24.0° to cental body equator
- Orbit direction
- prograde
- Synchronous
- no
- Period
- 27.321 days
- Synchronous
- yes
- Obliquity
- 6.687°
- Period
- 27.321 days
- Dimensions
- 1736.0 km (polar) - 1738.1 km (equatorial)
- Mean radius
- 1737.1 $km$
- Mass
- 7.342e+22 $kg$ (0.013 Earth mass)
- Mean density
- 3.344 $g/cm^{3}$
Surface
- Gravity
- 1.62 $m/s^{2}$
- Geometric albedo (Vis)
- 0.12
- Bond albedo
- 0.136
- Temperature
- < 100 K (pole) - 200 K (mean) - 390 K (equator)
- Pressure
- outgassing and sputtering atmosphere: $1 10^{-12}$ mbar (night) - $1 10^{-9}$ mbar (day)
- Surface species
-
Name State Mole fraction Location olivine solid mantle pyroxenes solid mantle albite anorthite series solid crust ilmenite solid mare H2O solid polar craters - Surface comments
- also armalcolite $(Mg,Fe^{2+})Ti_2O_5$, tranquillityite $(Fe^{2+})_8Ti_3Zr_2 Si_3O_{24}$ and pyroxferroite $(Fe^{2+},Ca)SiO_3$