Juno-I
USA Wikipedia 
Built & Operated By
Chrysler
Commercial · founded 1950
Family
Redstone
variant Juno I
Maiden Flight
31 JAN 1958
About
The Juno I was a four-stage American booster rocket which launched America's first satellite, Explorer 1 in 1958. A member of thr redstone family, it was derived from the Jupiter-C sounding rocket.
Vehicle Specifications
Height
21.2 m
Diameter
1.78 m
Launch Mass
29 T
Thrust
416 kN
Stages
4
Configuration
Expendable
Launch Record
Total Launches
6
Successful
3
Failed
3
Performance
To LEO
11 kg