Also you have two types of satelite, Geocentric and Geostationary,
Never heard the term Geocentric before to describe a satellite - Geostationary yes. You seem to use geocentric to describe a satellite that "goes round the Earth". As Rainboe mentions geostationary satellites orbit at about 24,000 miles because, only at that altitude, do they orbit the earth in the same time the earth rotates so they remain over the same point, which HAS to be on the equator.
The satellites used to produce the images I linked to orbit at between 450 and 500 kms - a lot lower than geostationary satellites.
it still isn't to the level of quality companies like google earth are looking for.
I think you will find that Google Earth uses vast numbers of these images from DigitalGlobe.