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Here are details about a :
Space commemorative cover
or Space Cover.

Kosmodrom / Ort : USA

Stempeldatum: 3 Mar. 1959
Ereignisart : Start
Startrampe / Ort : USA KSC (FL)
Bemannte / Robotische Mission : Robotisch
Missionsziel/-typ : Experimentell / Wissenschaft

SCIENCE

ou?/where?: au sol - ground
autographe?: non - none

Beschreibung : After a successful launch Pioneer 4 achieved its primary objective (an Earth-Moon trajectory), returned radiation data and provided a valuable tracking exercise. The probe passed within 60,000 km of the Moon`s surface on 4 March 1959 at 22:25 UT (5:25 p.m. EST) at a speed of 7,230 km/h. The distance was not close enough to trigger the photoelectric sensor. The probe continued transmitting radiation data for 82.5 hours, to a distance of 658,000 km, and reached perihelion on 18 March 1959 at 01:00 UT.

Schlüsselwort/-wörter :
#Antenne,
#Rakete,

Ist AUSSERHALB der Weltraum-Revuen.

Letzte Änderung: 09/06/2015 @ 10h03