Juno-I
Redstone family
· built by Chrysler
· maiden flight 1958-01-31
Profile data last updated: 2026-08-29T15:37:07.354998+00:00 | 7531-10-17
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.
Specifications
21.2 mLength
1.78 mDiameter
29 tLaunch mass
4Stages
416 kNLiftoff thrust
Payload Capacity
11 kgTo LEO
Lifetime Launch Record
As reported by Launch Library 2 across this rocket's entire history, not just the launches tracked on this site.
6Total launches
3Successful
3Failed
0Upcoming
Launches Tracked on This Site
6In our archive
50.0%Success rate
Feb 01, 1958 03:47 UTCEarliest tracked
Oct 23, 1958 03:21 UTCMost recent
| Mission | Date | Status |
|---|---|---|
| Juno-I | Beacon | Oct 23, 1958 03:21 UTC | Failure |
| Juno-I | Explorer 5 | Aug 24, 1958 06:17 UTC | Failure |
| Juno-I | Explorer 4 | Jul 26, 1958 15:00 UTC | Success |
| Juno-I | Explorer 3 | Mar 26, 1958 17:38 UTC | Success |
| Juno-I | Explorer 2 | Mar 05, 1958 18:27 UTC | Failure |
| Juno-I | Explorer 1 | Feb 01, 1958 03:47 UTC | Success |