 Conception of Bion 5 in orbit | |
| Names | Bion-5 Biocosmos 5 |
|---|---|
| Mission type | Bioscience |
| Operator | Institute of Biomedical Problems |
| COSPAR ID | 1979-083A |
| SATCAT no. | 11536 |
| Mission duration | 14 days, 10 hours and 54 minutes |
| Spacecraft properties | |
| Spacecraft type | Bion |
| Bus | Zenit 12KS |
| Manufacturer | TsSKB |
| Launch mass | 6,000 kg (13,000 lb) |
| Start of mission | |
| Launch date | 29 September 1979, 15:30:00 UTC |
| Rocket | Soyuz-U |
| Launch site | Plesetsk 41/1[1] |
| Contractor | TsSKB |
| End of mission | |
| Recovered by | Soviet Space Forces |
| Landing date | 14 October 1979, 02:24 UTC |
| Landing site | 52°17′N 65°30′E / 52.283°N 65.500°E near Oktyabr'skoe, Kazakhstan, USSR |
| Orbital parameters | |
| Reference system | Geocentric[2] |
| Regime | Low Earth orbit |
| Perigee altitude | 226 km (140 mi) |
| Apogee altitude | 406 km (252 mi) |
| Inclination | 62.80° |
| Period | 90.50 minutes |
Bion 5, also known as Kosmos 1129 (in Russian: Бион 5, Космос-1129) was a Bion satellite. It was an international biomedical research mission involving scientists from nine countries, launched on 29 September 1979, at 15:30:00 UTC. Among the experiments was the first attempt to breed mammals in space, which proved unsuccessful. The mission ended after 14.5 days, on 14 October 1979, at 02:24 UTC. The mission had the cooperation of the Bulgaria, Czechoslovakia, East Germany, France, Hungary, Poland, Romania, the United States and the Soviet Union.