GPS satellites Orbits

GPS satellites are at a Medium Earth Orbit, which is 22,240 miles  (42,300 km).  Stationary satellites are about twice as far out.  The moon is about 238,900 miles (384,000 km) from Earth on average.  

 

Orbits of the GPS-Satellites (distances are to scale)

The Moon orbiting Earth with sizes and distances to scale.

Interesting sites I found:

http://www.nasm.si.edu/gps/work.html

http://www.aviationexplorer.com/Global_Positioning_System_GPS.html

http://www.enchantedlearning.com/subjects/astronomy/moon/  Printouts of Moon Phase chart,

from http://www.kowoma.de/en/gps/orbits.htm:
the height of the orbits is then about 20200 km. Orbits in this height are referred to as MEO – medium earth orbit.   In comparison, geostationary satellites like ASTRA or Meteosat – satellites orbit the earth at 42300 km, which is about twice the distance of GPS satellites.

from http://en.wikipedia.org/wiki/Geocentric_orbit:
Medium Earth Orbit (MEO) - Geocentric orbits ranging in altitude from 2,000 km to just below geosynchronous orbit at 35,786 km (22,240 miles). Also known as an intermediate circular orbit.


images from:
http://www.kowoma.de/en/gps/orbits.htm
http://en.wikipedia.org/wiki/Orbit_of_the_Moon
http://upload.wikimedia.org/wikipedia/commons/9/94/GPS_satellite_orbit.gif
http://www.aviationexplorer.com/Global_Positioning_System_GPS.html