Redstone family
Juno-I
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.
Flights flown6
Success rate50%3/6
Payload to LEO11kg
Maiden flight1958-01-31
Peak year19586 flights
Juno-I is built by Chrysler of the United States. It first flew on 1 February 1958 and last flew on 23 October 1958.
Flight record
50% success rate3 of 6 flown · 3 failed
First flight1958-02-01
Latest flight1958-10-23
Failures3
Consecutive successes0
Fastest turnaround20d 23h
Payload
| Low Earth orbit | 11kg |
|---|
Vehicle
| Stages | 4 |
|---|---|
| Length | 21.2m |
| Diameter | 1.78m |
| Launch mass | 29t |
| Liftoff thrust | 416kN |
| Maiden flight | 1958-01-31 |
| Reusable | No |
Pads used
Orbits delivered
Low Earth Orbit3Medium Earth Orbit2Elliptical Orbit1
Launch history
| Date | Mission | Pad | Orbit | Outcome |
|---|---|---|---|---|
| 1958-10-23 | Juno-I | Beacon | Launch Complex 5 | Low Earth Orbit | Failure |
| 1958-08-24 | Juno-I | Explorer 5 | Launch Complex 5 | Medium Earth Orbit | Failure |
| 1958-07-26 | Juno-I | Explorer 4 | Launch Complex 5 | Medium Earth Orbit | Success |
| 1958-03-26 | Juno-I | Explorer 3 | Launch Complex 26A | Elliptical Orbit | Success |
| 1958-03-05 | Juno-I | Explorer 2 | Launch Complex 26A | Low Earth Orbit | Failure |
| 1958-02-01 | Juno-I | Explorer 1 | Launch Complex 26A | Low Earth Orbit | Success |
Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.
Further reading: Wikipedia