Encyclopedia Astronautica
USA 193


American military technology satellite. One launch, 2006.12.14, US shoots down failed USA 193 satellite.. Classifed NRO mission of uncertain objectives, possibly military observation with a mixed payload.

Later it was revealed the on-board propulsion system had completely failed, putting the satellite in a rapidly-decaying orbit. The Pentagon said that the hydrazine propellant aboard consituted a risk and announced they would shoot the satellite down. The real objective may have been to demonstrated US antisatellite capability after a Chinese test in 2007. In any case, on 21 February 2008 the satellite was down to a 242 km x 257 km orbit. At 03:26 GMT an SM-3 missile was fired from the Aegis cruiser USS Lake Erie stationed west of Hawaii to intercept the satellite. The hit-to-kill warhead successfully rammed the satellite, breaking it up into 153 catalogued items of debris with perigees of 170-250 km and apogees of up to 2700 km.

First Launch: 2006.12.14.
Number: 1 .

More... - Chronology...


Associated Countries
See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Launch Vehicles
  • Delta American orbital launch vehicle. The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Delta began as Thor, a crash December 1955 program to produce an intermediate range ballistic missile using existing components, which flew thirteen months after go-ahead. Fifteen months after that, a space launch version flew, using an existing upper stage. The addition of solid rocket boosters allowed the Thor core and Able/Delta upper stages to be stretched. Costs were kept down by using first and second-stage rocket engines surplus to the Apollo program in the 1970's. Continuous introduction of new 'existing' technology over the years resulted in an incredible evolution - the payload into a geosynchronous transfer orbit increasing from 68 kg in 1962 to 3810 kg by 2002. Delta survived innumerable attempts to kill the program and replace it with 'more rationale' alternatives. By 2008 nearly 1,000 boosters had flown over a fifty-year career, and cancellation was again announced. More...
  • Delta 7920-XC Three stage vehicle consisting of 9 x GEM-40 + 1 x EELT Thor/RS-27A + 1 x Delta K with 3.05 m (10 foot) diameter composite fairing More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC2W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

USA 193 Chronology


2006 December 14 - . 21:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7920-XC. LV Configuration: Delta 7920-10C D322.
  • USA 193 - . Nation: USA. Agency: Seal Beach. Class: Technology. Type: Military technology satellite. Spacecraft: USA 193. Decay Date: 2008-02-29 . USAF Sat Cat: 29651 . COSPAR: 2006-057A. Apogee: 376 km (233 mi). Perigee: 354 km (219 mi). Inclination: 58.5000 deg. Period: 91.83 min. Classifed NRO mission of uncertain objectives, possibly military observation with a mixed payload. Later it was revealed the on-board propulsion system had completely failed, putting the satellite in a rapidly-decaying orbit. The Pentagon said that the hydrazine propellant aboard consituted a risk and announced they would shoot the satellite down. The real objective may have been to demonstrate US antisatellite capability after a Chinese test in 2007. In any case, on 21 February 2008 the satellite was down to a 242 km x 257 km orbit. At 03:26 GMT an SM-3 missile was fired from the Aegis cruiser USS Lake Erie stationed west of Hawaii to intercept the satellite. The hit-to-kill warhead successfully rammed the satellite, breaking it up into 153 catalogued items of debris with perigees of 170-250 km and apogees of up to 2700 km.

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