Italsat 1 |
Italy |
Spacecraft n°: |
Italian spacecraft n°: 7 |
| Designation | 21055 / 91003A |
| Launch date | 15 Jan 1991 |
| Launch site | Ko, ELA-2 |
| Launch vehicle | Ariane-44L (V41) |
| Mission: | Communications |
| Geostationary orbit: | |
| Perigee / Apogee | 35815 x 35951 km |
| Eccentricity | |
| Inclination | 12.3 deg |
| Period | 1441 min |
| Location | 13.2°E |
| Prime contractor | Selenia Spazio |
| Platform | Italsat |
| Mass at launch | 1850 kg |
| Mass in orbit | 1122 kg |
| Payload mass | 273.4 kg: transponders: 198 kg, antennas: 75.4 kg) |
| Dimension | 3.5 x 2.7 x 2.3 m |
| Solar array | 21.8 m span |
| Stabilization | 3-axis |
| DC power | EOL: equinox: 1760 W, solstice: 1633 W |
| Payload power | 937 W |
| Design lifetime | 6 years |
| Out of service | Jan 2001 |
| Cause | - |
| Main transponders | 3 |
| Backup transponders | |
| Power | 20 W (TWTA) |
| Bandwidth | 36 MHz |
| Coverage | Italy (1.55 x 1.06 deg) |
| EIRP max | 46.2 dBW |
| G/T | 5.5 dB/K |
| SFD | -99.6 dBW/m² |
| Polarization | linear V (both upload and download) |
| Main transponders | 6 in 20/60 GHz |
| Backup transponders |
2
in 20/30 GHz 4 in 20/60 GHz |
| Power | 20 W (TWTA) |
| Bandwidth | 120 MHz |
| Coverage | Italy (6 spots of 0.49°) |
| EIRP max | 57 dBW |
| G/T | 16.1 dB/K |
| Polarization | linear V (both upload and download) |