Here are details about a :
Space commemorative cover
or Space Cover.
Cosmodrom : USA
Date of Cancellation: Feb. 18, 1961
Kind of Event : Launch
Launch pad : USA Vandenberg (CA)
habité?/manned?: robot
Mission type : Military
ou?/where?: au sol - ground
autographe?: non - noneDescription : Discoverer 21, also known as RM-2, was an American satellite which was launched in 1961. It was a technology demonstration spacecraft, based on an Agena-B.
Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Zeta 1.
Discoverer 21 was operated in a low Earth orbit, with a perigee of 243 kilometres (151 mi), an apogee of 1,026 kilometres (638 mi).
It remained in orbit until 20 April 1962, when it decayed and reentered the atmosphere. Keyword(s) :
#Planet,
#Rocket, SPACE REVUE : 02 - 2015 Last modified: 06/15/2015 @ 15h58
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Page : future · Ref: USA 48 Space Event : DISCOVERER 21 (RM 2) (SATELLITE) · THOR AGENA
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