The Free On-line Dictionary of Computing (30 December 2018):

low earth orbit

    (LEO) The kind of orbit used by
   communications satellites that will offer high bandwidth for
   video on demand, television, and Internet communications.
   A satellite in LEO, in contrast to one in a geostationary
   orbit, is not in a fixed position relative to the Earth's
   surface so several satellites are required to provide
   continuous service.

   [Ovum report, "Applications for the superhighway", John
   Moroney].

   (1996-02-06)