 UOSat-OSCAR 9
(UoSAT 1)
Spacecraft Summary
| OSCAR Designation: |
UOSat-OSCAR 9 |
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Oscar Number: |
UO-9 |
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| International Designator: |
1981-100B |
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Norad Number: |
12888 |
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| Common Name: |
UoSAT 1 |
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Satellite Type: |
Microsatellite |
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| Launch Date: |
6 October, 1981 |
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Launch Location: |
Vandenberg, AFB |
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| Launch Vehicle: |
Thor Delta |
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Decay Date: |
13 October, 1989 |
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| Apogee: |
538.00 |
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Perigee: |
541.00 |
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| Inclination: |
97.51 |
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Period: |
87.31 |
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| Dimensions: |
74 x 42 x 42 cm |
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Weight: |
52.000 Kg |
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| Organization: | University of Surrey |
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Sorry - no frequency information is currently availableIf you have frequency information about this satellite please contact the AMSAT website team
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Detailed Description
UoSAT-OSCAR 9 was launched October 6, 1981 by a Thor Delta launcher from Vandenberg Air Force Base, Lompoc, California. UO-9 was launched piggyback with Solar Mesosphere Explorer satellite. Weight 52 kg. Orbit 538 x 541 km sun-synchronous LEO orbit. Inclination 97.46 degrees. Box shaped 740 x 420 x 420 mm. Deployable gravity gradient boom.
Firsts: First on-board computer (IHU - Integrated Housekeeping Unit) for battery and attitude management, remote control, and experiments. S-band beacon.
Built by the University of Surrey in the United Kingdom, UO-9 was UoSAT's first experimental satellite. It was a scientific and educational low-Earth orbit satellite containing many experiments and beacons but no amateur transponders. UO-9 was fully operational until it re-entered October 13, 1989 from a decaying orbit after nine years of service.
UO-9 was the first amateur satellite to carry an S-Band beacon. It was switched on for the first time on May 19, 1983 and heard on the first available pass that day (ref: RSGB Radio Communication, August 1983, p. 713). The S-Band and X-Band beacons on board UO-9 are described in an article in The Radio and Electronic Engineer, Vol. 52, No 8/9, pp. 412-416 August/September 1982. (Thanks G3WDG).
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Reference Documents:
- Bernie Glassmeyer, "A New Amateur Radio Satellite--UoSAT OSCAR 9 (Strays)," QST, Nov 1981, p. 105.
- Bernie Glassmeyer, "UoSAT-OSCAR 9," QST, Dec 1981, p. 69.
- Vern Riportella, "UoSAT-OSCAR 9 Lives! (Strays)," QST, Nov 1982, p. 25.
- Robert Diersing, "Microcomputer Processing UoSat-OSCAR 9 Telemetry," QST, Aug 1984, p. 23.
- Bob Ruedisueli, "UoSAT's Propagation Experiment," Orbit, No. 9, Jan/Feb 1982, p. 5; Amsat Satellite Report, No. 192, Dec 15, 1989.
- Vern Riportella, "Preparing For the Fiery End: Adieu UoSAT-1 (Amateur Satellite Communications)," QST, May 1989, p. 84.
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