| Designation | 10064 / 77049A |
| Launch date | 17 Jun 1977 |
| Country of origin | France |
| Mission | Scientific: gamma-ray astronomy |
| Perigee/Apogee | 449/522 km |
| Inclination | 50.7° |
| Period | 94.3 min |
| Launch vehicle | Cosmos C |
| Launch site | Tyuratam |
| Mass at launch | 102 kg |
| Decay | 20 Jun 1979 |