USA-135, also known as GPS IIA-19, GPS II-28 and GPS SVN-38, is an American navigation satellite which forms part of the Global Positioning System. It was the last of nineteen Block IIA GPS satellites to be launched. USA-135 was launched at 00:30:00 UTC on 6 November 1997, atop a Delta II carrier rocket, flight number D249, 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-135 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.