Orbital launch vehicle
Juno II
Juno II was an American space launch vehicle used during the late 1950s and early 1960s. It was derived from the Jupiter missile, which was used as the first stage.
Flights flown10
Success rate50%5/10
Payload to LEO41kg
Maiden flight1958-12-06
Peak year19594 flights
Juno II is built by Army Ballistic Missile Agency of the United States. It first flew on 6 December 1958 and last flew on 24 May 1961.
Flight record
50% success rate5 of 10 flown · 5 failed
1958peak 1959 · 4 flights1961
First flight1958-12-06
Latest flight1961-05-24
Failures5
Consecutive successes0
Fastest turnaround27d 5h
Payload
| Low Earth orbit | 41kg |
|---|
Vehicle
| Stages | 4 |
|---|---|
| Length | 24m |
| Diameter | 2.67m |
| Launch mass | 55t |
| Liftoff thrust | 654kN |
| Maiden flight | 1958-12-06 |
| Reusable | No |
Pads used
Orbits delivered
Low Earth Orbit2Lunar flyby2Medium Earth Orbit2Elliptical Orbit1
Launch history
| Date | Mission | Pad | Orbit | Outcome |
|---|---|---|---|---|
| 1961-05-24 | Juno II | S-45A | Launch Complex 26B | Failure | |
| 1961-04-27 | Juno II | Explorer 11 | Launch Complex 26B | Success | |
| 1961-02-25 | Juno II | S-45 | Launch Complex 26B | Failure | |
| 1960-11-03 | Juno II | Explorer 8 | Launch Complex 26B | Medium Earth Orbit | Success |
| 1960-03-23 | Juno II | NASA S-46 | Launch Complex 26B | Medium Earth Orbit | Failure |
| 1959-10-13 | Juno II | Explorer 7 | Launch Complex 5 | Low Earth Orbit | Success |
| 1959-08-15 | Juno II | Beacon | Launch Complex 26B | Low Earth Orbit | Failure |
| 1959-07-16 | Juno II | NASA S-1 | Launch Complex 5 | Elliptical Orbit | Failure |
| 1959-03-03 | Juno II | Pioneer 4 | Launch Complex 5 | Lunar flyby | Success |
| 1958-12-06 | Juno II | Pioneer 3 | Launch Complex 5 | Lunar flyby | 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