[2] USA-199 was launched at 20:04:00 UTC on 20 December 2007, atop a Delta II carrier rocket, flight number D331, flying in the 7925-9.5 configuration.

The satellite raised itself into medium Earth orbit using a Star-37FM apogee motor.

[2] By 15 February 2008, USA-199 was in an orbit with a perigee of 20,082 kilometers (12,478 mi), an apogee of 20,283 kilometers (12,603 mi), a period of 717.98 minutes, and 54.9 degrees of inclination to the equator.

[4] It is used to broadcast the PRN 29 signal, and operates in slot 1 of plane C of the GPS constellation.

The satellite has a design life of 10 years and a mass of 2,032 kilograms (4,480 lb).