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Step 5

Also called TSX 5, Tri-Service Experiment and P95-2


Designation 26374 / 00030A
Launch date 7 Jun 2000
Country of origin United States
Mission Military: ?
Perigee/Apogee 404/1689 km
Inclination 69°
Period 106 min
Launch vehicle Pegasus #29

Worth $85 million

External resources

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Technical data


Prime contractor TRW
Platform STEP
Mass at launch 250 kg
Mass in orbit  
Solar array  
DC power  
Design lifetime  

Will carry 2 experimental payloads with 6-month lifetimes (with a 1 year goal): Space Technology Research Vehicle-2 (STRV-2) and Compact Environmental Anomaly Sensor (CEASE).

STRV 2 is the first satellite to ground experiment capable of gigabit throughput via a laser. The experiment was built by AstroTerra Corporation. It is sponsored by the Ballistic Missile Defense Organization in collaboration with the UK Ministry of Defense's DERA organization at Farnborough. It is a followup of the STRV program. The mission will be controlled from Kirtland AFB, New Mexico.

CEASE (also called S97-1) was developed by AFRL (USAF Reseach Lab). It is a prototype sensor package to provide warning of spacecraft charging and radiation events.

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