Program: Stacksat

USA

US military program composed of 3 similar satellites named POGS, TEX & SCE. This program is also known as P87-2

Launch data:

Designation POGS or USA 56: 20560 / 90031A
TEX or USA 57: 20561 / 90031B
SCE or USA 58: 20562 / 90031C
Launch date 11 Apr 1990
Launch site Va, SLC-3W
Launch vehicle  Atlas-E Altair-3A (#51)
MissionMilitary: study ionospheric effects on signal propagation
Earth orbit:
Perigee/Apogee 741 km
Inclination 90°
Period  

TEX is a USAF satellite, POGS & SCE are from US Navy

Specifications

Prime contractor CTA
Platform  
Mass at launch 68 kg each
Mass in orbit  
Dimension  
Solar array 15 W
Stabilization gradient
DC power  
Design lifetime 3 years

possible downlink: 327.250 or 328.250 MHz

Ref: #15 - update: 24.10.04