SL-1 R/B
| Launched | 14 May 1958 |
| Flight ended | 2 December 1958 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 7 |
| COSPAR ID | 1958-004A |
| Observing |
Launched alongside
SPUTNIK 3