UoSAT-1
| Mission type | OSCAR |
|---|---|
| Operator | University of Surrey |
| COSPAR ID | 1981-100B |
| SATCAT no. | 12888 |
| Spacecraft properties | |
| Launch mass | 54 kilograms (119 lb) |
| Start of mission | |
| Launch date | 6 October 1981, 11:27 UTC |
| Rocket | Delta 2310 D-157 |
| Launch site | Vandenberg SLC-2W |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 372 kilometres (231 mi) |
| Apogee altitude | 374 kilometres (232 mi) |
| Inclination | 97.6° |
| Period | 92 minutes |
UoSAT-1, also known as UoSAT-OSCAR 9 (UO-9), was a British amateur radio satellite which orbited Earth. It was built at the University of Surrey and launched into low Earth orbit on 6 October 1981. It exceeded its anticipated two-year orbital lifespan by six years, having received signals on 13 October 1989, before re-entering the atmosphere.
This was the first of several UoSAT satellites; followed by UoSAT-2.