Designation | 22796 / 93058B |
Launch date | 12 Sep 1993 |
Country of origin | United States |
Operator | NASA |
Mission | Telecommunications |
Geostationary orbit | see below |
Launch vehicle | STS 51 |
Begin | End | Position |
L: 12 Sep 1993 | Jun 2000 | 100°W |
Aug 2000 | 105°W, inclined |
Prime contractor | GE Astro Space |
Platform | GE-4000 modified |
Mass at launch | 2545 kg |
Mass in orbit | 1555 kg |
Dimensions | 2.03 x 2.13 x 1.92 m |
Stabilization | 3-axis |
DC power |
BOL:
1770 W (batteries: 2 NiCd of 19 AH each) EOL: 1418 W (no payload operation during eclipse) |
Design lifetime | 4 years |
Telemetry & Command | Ka-band with backup in C-band |
Main transponders | 4 |
Backup transponders | |
Power | 40 W (TWTA) |
Bandwidth | 900 MHz |
Coverage |
A
beam-forming network of 45 horns gives a coverage of about 20% of CONUS
providing 3 x 0.3° fixed beams There is a single 1.0° mechanically steered beam |
EIRP max |
spot
beam: 60 dBW contiguous sectors: 59 dBW steerable: 53 dBW |
Polarization | linear H/V |