Tags: Artificialsatellite, Satellite.
USA-47 also known as GPS II-4 and GPS SVN-19 was an American navigation satellite which formed part of the Global Positioning System. It was the fourth of nine Block II GPS satellites to be launched which were the first operational GPS satellites to fly.USA-47 was launched at 09:31:01 UTC on 21 October 1989 atop a Delta II carrier rocket flight number D188 flying in the 6925 configuration.
