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Sputnik 01

Also called PS 1


Designation 00002 / 57001B
Launch date 4 Oct 1957
Country of origin CIS
Mission Scientific: ionosphere study
Perigee/Apogee 227/945 km
Inclination 65°
Period 96.1 min
Launch vehicle Semiorka A (8K71PS)
Launch site Tyuratam

First satellite ever launched

Sphere made of aluminum of 58 cm diameter with 4 antennas. Its 2 radio transmitters send signals during 21 days. It enabled propagation and ionospherical studies.

End of life

Decay 3 Jan 1958

Technical data


Prime contractor  
Mass at launch 83.6 kg
Mass in orbit  
Dimension 58 cm diameter
Solar array  
DC power  
Design lifetime  

Frequencies: 20.005 & 40.002 MHz

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