ViaSat 1
| ViaSat 1 | |
|---|---|
| Start date | October 19, 2011, 18:49 UTC |
| Launcher | Proton-M / Bris-M |
| Launch site | Baikonur 200/39 |
| COSPAR-ID : | 2011-059A |
| Takeoff mass | 6.74 t |
| Manufacturer | Space Systems / Loral |
| Satellite bus | LS-1300 |
| lifespan | 15 years |
| operator | Viasat |
| Playback information | |
| Transponder | 72 Ka band |
| Others | |
| Electrical power | unknown |
| position | |
| First position | 115 ° west |
| List of geostationary satellites | |
ViaSat 1 is a commercial communications satellite from the US company Viasat.
It was placed in geostationary orbit on October 19, 2011 at 8:49 p.m. CEST with a Proton-M rocket from the Baikonur rocket launch site . After the first three stages of the launch vehicle had been cut off, the Briz-M upper stage took over the entry into the geostationary orbit. Through five burning phases of the upper stage, the satellite moved from its initial orbit at an altitude of around 180 kilometers and an inclination of 51.5 degrees into a geotransfer orbit between 2,360 and 35,785 kilometers at 30.4 degrees, from which it swings into its final position at 115 ° west . With a launch mass of 6.74 t, ViaSat 1 is the heaviest payload to date that has been brought to geotransfer orbit with the Proton-M / Bris-M combination.
The three-axis stabilized satellite is equipped with 72 Ka-band transponders (63 for the USA and nine for Canada) and from the position 115 ° West is intended to provide 75% of the USA and the most populous areas of Alaska, Hawaii and Canada with telecommunications services / television / Internet supply. With a data transmission capacity of up to 140 gigabits of data per second, it is currently the world's most powerful communications satellite. ViaSat Incorporation is cooperating with SS / L, Telesat and Eutelsat for the operation of the satellite in order to ensure the operation of the satellite and to market its possibilities. Telesat Canada takes over the telemetry, tracking and control of the satellite and provides the position reserved for them at 115 ° West. Eutelsat uses its extensive network to market ViaSat's broadband services for telecommunications, Internet services and television. The satellite was built on the basis of the LS-1300 satellite bus from Space Systems / Loral (USA / Canada) and has a planned service life of 15 years.
Web links
- SSLoral: Viasat 1 manufacturer website
- Viasat: ViaSat 1 operator website
- ILS: Mission-Overview (PDF; 1.3 MB)
Individual evidence
- ↑ a b Raumfahrer.net: ViaSat 1 in orbit , author: Günther Glatzel / October 20, 2011, 10:10 am
- ↑ Nasaspaceflight: ILS Proton-M launches the highest ever throughput satellite, ViaSat-1