ParkinsonSAT, PSat or Naval Academy OSCAR 84 is a U.S. technology demonstration satellite and an amateur radio satellite for Packet Radio. It was built at the U.S. Naval Academy and was planned as a double satellite (ParkinsonSAT A and B). The name ParkinsonSAT was chosen in honor of Bradford Parkinson, the father of the GPS system. After successful launch, the satellite was assigned the OSCAR number 84.
| Mission type | Communications |
|---|---|
| Operator | U.S. Navy[1] |
| COSPAR ID | 2015-025D[1] |
| SATCAT no. | 40654[1] |
| Spacecraft properties | |
| Bus | 1.5U Cubesat |
| Manufacturer | Aerospace Co. |
| Launch mass | 1.3 kilograms (2.9 lb) |
| Dimensions | 10 by 10 by 15 centimetres (3.9 in × 3.9 in × 5.9 in) |
| Start of mission | |
| Launch date | 20 May 2015, 15:05 UTC |
| Rocket | Atlas V 501 AV-054 |
| Launch site | Cape Canaveral SLC-41 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Semi-major axis | 6,822 kilometres (4,239 mi)[2] |
| Eccentricity | 0.160974[2] |
| Perigee altitude | 341.5 kilometres (212.2 mi)[2] |
| Apogee altitude | 561.1 kilometres (348.7 mi)[2] |
| Inclination | 54.9919°[2] |
| Period | 93.5 minutes[2] |
| RAAN | 18.1944°[2] |
| Argument of perigee | 119.1910°[2] |
| Mean motion | 15.40667422[2] |
| Epoch | 26 June 2018[2] |
| Transponders | |
| Band | FM |
Mission
editThe satellite was launched on May 20, 2015, with an Atlas V rocket along with the main payload X-37B OTV-4 and 9 other CubeSat satellites (X-37B OTV-4, GEARRS 2, LightSail A, OptiCube 1, OptiCube 2, OptiCube 3, USS Langley, AeroCube 8A, AeroCube 8B and BRICSat-P) from Cape Canaveral AFS, Florida.
ParkinsonSAT is a student satellite project. It was partly funded by the Aerospace Corporation. It has a transponder for transmitting telemetry from remote measuring points (eg drifting buoys). This telemetry is to be transmitted to a network of ground stations. A second transponder enables multi-user text transmission in PSK31 mode. This transponder was built by the Brno University of Technology.[3]
Originally, the project consisted of 2 identical satellites: PSat-A and PSat-B, 2 identical 1.5U Cubesats, which should be brought together in a 3U starter into space. During the long wait for a launch opportunity in 2014, the construction of the satellite was changed again. The solar cells have been replaced by new, more efficient cells. The other originally named PSat-B CubeSat was rebuilt and started as BRICSat-P.
Frequencies
edit- 406 MHz Ocean Data Telemetry Microsat Link (ODTML)
- 145.825 MHz APRS Uplink and Downlink (1200 Band AX.25)
- 435.350 MHz PSK31 Downlink (FM, 300 mW)
- 28.120 MHz PSK31 Uplink (SSB, 25 W)
See also
edit
References
editExternal links
edit- Psat (ParkinsonSAT) Design Page
- ParkinsonSAT Archived 2015-09-21 at the Wayback Machine. U.S. Naval Academy Satellite Lab
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