Here are details about a :
Space commemorative cover
or Space Cover.
Kosmodrom / Ort : USA
Stempeldatum: 16 Août 1961
Ereignisart : Start
Startrampe / Ort : USA KSC (FL)
Bemannte / Robotische Mission : Robotisch
Missionsziel/-typ : Experimentell / Wissenschaft
ou?/where?: au sol - ground
autographe?: non - noneBeschreibung : Explorer 12 was a spin-stabilized, solar-cell-powered spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and magnetospheric and interplanetary magnetic fields. It was the first of the S 3 series of spacecraft, which also included Explorers 14, 15, and 26. A 16-channel PFM/PM time-division multiplexed telemeter was used. The time required to sample the 16 channels (one frame period) was 0.324 s.
The spacecraft functioned well until December 6, 1961, when it ceased transmitting data apparently as a result of failures in the power system. Good data were recorded for approximately 90% of the active lifetime of the spacecraft. Schlüsselwort/-wörter : keine Ist AUSSERHALB der Weltraum-Revuen. Letzte Änderung: 11/06/2015 @ 12h18
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USA 65 A
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Seite : future · Ref: USA 65 Weltraumereignis : EXPLORER 12 (SATELLITE) · THOR DELTA
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