SES-5
| SES-5 | |
|---|---|
| Start date | July 9, 2012, 18:38 UTC |
| Launcher | Proton-M / Bris-M |
| Launch site | Baikonur |
| COSPAR-ID : | 2012-036A |
| Takeoff mass | 6,007 kg |
| Manufacturer | Space Systems / Loral |
| Satellite bus | LS 1300 |
| lifespan | 15 years |
| operator | SES World Skies |
| Playback information | |
| Transponder | 36 C-band and 24 Ku-band |
| Bandwidth | 36 MHz in the C band and 33 or 36 MHz in the Ku band |
| position | |
| Actual position | 5 ° East |
| drive | R-4D with 445 N thrust |
| List of geostationary satellites | |
SES-5 (formerly Sirius-5 or Astra 4B ) is a commercial communications satellite of the Dutch SES World Skies .
Takeoff and orbit
It was July 9, 2012 at 18:38 UTC with a Proton-M - carrier rocket from the rocket launch site Baikonur by International Launch Services in a geostationary brought orbit. The launch was originally planned for June 19, 2012, but errors in the first stage of the launcher were discovered during launch preparations and the launch was postponed. There was a second postponement from July 7th to 9th due to problems checking the Proton-M's fuel tanks. Since SES 5 has a comparatively large launch mass of 6 tons for a communications satellite, it ended up on a transition orbit with a fairly low perigee. His goal in the geostationary orbit, the satellite reached on July 10, by repeated firing of its own drive, made up of a with monomethyl hydrazine and nitrogen tetroxide operated apogee motor of the type R-4D is a thrust force of approximately 445 N.
payload
The three-axis stabilized satellite with 36 C-band - and 24 Ku-band - transponders as well as a in the L-band operating region navigation payload for the European Geostationary Navigation Overlay Service equipped (EGNOS) and is intended on the position of 5 degrees East (with common Astra 4A ) Offer direct-to-home telecommunications services. One of the two Ku-band antennas will supply customers in Scandinavia and the Baltic countries (through Viasat ), while the other will supply sub-Saharan Africa. In northern Germany, broadcasts via the former are some of the strongest satellite signals, but all broadcasts are encrypted with Videoguard. Of the two C-band antennas, one has global coverage and the other covers Europe, Africa and the Middle East. SES 5 offers additional Ka-band uplink capabilities that enable flexible operation between Europe and Africa. It was based on the LS-1300 - satellite bus the American company Space Systems / Loral built and has a design life of 15 years.
Web links
- Manufacturer website (English)
- Operator website
- SatBeams - Satellite Details - SES 5 (Sirius 5, Astra 4A)
- ILS Launch: Mission-Overview (PDF; 1.4 MB)
Individual evidence
- ↑ SES: SES-5
- ↑ RIA Novosti: Dutch communications satellite launched from the Baikonur Cosmodrome with Proton M rocket , July 10, 2012, 8:39 am
- ↑ a b raumfahrer.net: SES 5 in space , author: Thomas Weyrauch / July 10, 2012, 10:05 p.m.
- ↑ INFOSAT: New SES-5 satellite successfully launched - News - Satellite , July 10, 2012
