USA-56

 1990-031A

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The first P87-2 Stacksat (see PDD) was POGS, the Polar Orbiting Geomagnetic Survey. The 60 kg satellite carried a DMA/Naval Oceanography Command magnetometer, and a secondary payload called SSR (Solid State Recorder), a technology test of high speed VHSIC chips.

POGS
Date	Time	Event	Orbit
1990 Apr 11	1500	Launch by Atlas E	V SLC3
	1505	Atlas E SECO (T+5:20)
	1511	Atlas E sep
	1511	Star 20A burn (T+11:08)
	1512?	Star 20A burnout	740 x 740 x 90
	1512?	POGS sep
1995 Apr 11		end of ops

Payload:

• POGS Polar Orbiting Geomagnetic Survey magnetometer (NOC-602)

• SSR Solid State Recorder (STC-701)