1e geophysical satellite, taking 11 different measurements.
Spacecraft data:
Prime contractor
Customer
Mass at launch
1327 kg
Payload
970 kg
Basic shape
Cone
Dimension
3.76 long, 1.73 dia
End of life
Decay
06 Apr 1960 (.3)
Lifetime
692,00 days
Mission details:
15 May 1958: Sputnik 3 - backup of Korolyov Object-D satellite - launched from the Baikonur Cosmodrome by Sputnik (R-7) rocket into 216 x 1863 kilometre
orbit at 65.2 degrees inclination - an immediate failure of its onboard tape recorder means that data can only be gathered when it is within range of
a ground-based radio receiving station
01 May 1959: Sputnik 3 ceases to return useful information although its radio transmitter continues to function - powered by solar cells.