USA-90, also known as GPS IIA-10, GPS II-19 and GPS SVN-31, was an American navigation satellite which formed part of the Global Positioning System. It was the tenth of nineteen Block IIA GPS satellites to be launched. USA-90 was launched at 03:09:00 UTC on 30 March 1993, atop a Delta II carrier rocket, flight number D219, flying in the 7925-9.5 configuration. The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station, and placed USA-90 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.