ESRO-1B
| Launched | 30 September 1969 |
| Flight ended | 22 November 1969 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | European Space Research Organization |
| NORAD ID | 4114 |
| COSPAR ID | 1969-083A |
| Alternative names |
BOREAS |
| Observing |