Launch data:
| Designation | 15993 / 85076B |
| Launch date | 27 Aug 1985 | Launch site | KSC, LC-39A | Launch vehicle | Shuttle STS-51 I |
| Mission | Communications |
| Geostationary orbit: | |
| Location | life time in 160°E |
Optus A1 |
Australia |
International Sat. n°: |
Australia satellite n°: 3 |
Launch data:
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| Prime manufactor | Hughes |
| Platform | HS-376 |
| Operator | USSAT Pty., Ltd. ? Optus Communications Pty., Ltd. |
| Mass at launch | kg |
| Dry Mass | kg |
| Basic shape | |
| Dimension (m) | |
| Equipment | 15 Ku-band transponders operating at 14/12 GHz |
| Solar array | none |
| Stabilization | |
| Propulsion | Star-30BP |
| DC power | Solar cells (body mounted and drop-skirt) |
| Design lifetime | 7 yrs |
| Out of service | yes |