Launch data:
| Designation
|
25983
/ 99065D
|
| Launch date | 04 Dec 1999 - 18:53 UT |
| Launch site | WI, L-1011, RW04/22 |
| Launch vehicle |
Pegasus-XL/HAPS (#28) |
| Mission
| Communications
|
| Earth orbit: |
|
Perigee/Apogee
|
820
km
|
|
Inclination
|
45°
|
|
Period
|
101.5
min
|
Not in service in Jan 2001.
Spacecraft data:
| Prime contractor | OSC |
| Operator | |
| Platform | Microstar |
| Mass at launch | 40 kg |
| Mass in orbit | |
| Diameter | 1.04 m stowed |
| Height | 0.165 m stowed |
| Width | 2.2235 m deployed |
| Stabilization | gravity gradient |
| DC power | |
| Design lifetime | |
| Telemetry | 57.6 kbps in VHF |
Deploys a 3.28 m long VHF/UHF communications antenna.
Frequencies
Gateway to satellite: 148 - 149.9 MHz (57.6 kbps)
Satellite to client: 137 - 138 MHz (4.8 kbps)
Client to satellite: 148 - 149.9 MHz (2.4 kbps)
Satellite to gateway: 137 - 138 MHz (57.6 kbps)
Beacons: 400.05 - 400.15 MHz (often 400.100 MHz)
Addressing based on X400 protocol. Signals in symmetric differential PSK
(SDPSK)
Those satellites are radiation harden therefore weigh more, and that's why only
7 satellites were launched. Approx. 45 kg heavier.
Plane D
Ref: #15 - update: 16.03.09