USA 185 - .
Payload: Streak STP-R1. Mass: 417 kg (919 lb). Nation: USA.
Agency: DARPA.
Manufacturer: C4.
Class: Earth.
Type: Magnetosphere satellite. Spacecraft Bus: SA-200.
Spacecraft: Streak.
Decay Date: 2006-06-28 . USAF Sat Cat: 28871 . COSPAR: 2005-037A. Apogee: 318 km (197 mi). Perigee: 295 km (183 mi). Inclination: 96.30 deg. Period: 90.70 min. Delayed from May, June, July, 2005. Classified research satellite, said to carry instruments to characterise the space environment in a sun-synchronous orbit..