Sirius 4 (Astra 4A) (original) (raw)
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Sirius 4 [Lockheed Martin]
Nordic Satellite AB (NSAB) has awarded a contract in early January 2005 to Lockheed Martin to design and manufacture the Sirius 4 satellite.
Sirius 4 will be a multi-mission Ku/Ka-band satellite to be built on Lockheed Martin's reliable A2100AXS platform with a minimum service life of 15 years. The spacecraft will be designed to be compatible with all flight-proven commercial launch vehicles and NSAB intends to select the respective launch service provider later on in the year. The satellite will be deployed at NSAB's orbital position of 5� East in the second quarter of 2007.
The first mission of Sirius 4 will be to provide replacement capacity for NSAB's existing Sirius 2 and Sirius 3satellites in the Nordic and Baltic markets as well as to enhance coverage in Eastern Europe and Russia. This mission is supported by 46 active Ku-band transponders in the BSS and FSS frequency bands.
As a second mission Sirius 4 will provide one wide beam Ka-Band transponder for interactive applications in Scandinavia and the Baltic States.
The third mission of Sirius 4 will be to provide a sub-Saharan Africa beam complementing existing (Astra 2B, AMC 12 (also intially called Astra 4A)) African coverage within the SES GLOBAL fleet. This mission will be supported by a payload consisting of 6 active Ku-Band transponders and an additional Ka-Band transponder for inter-connections between Africa and Europe. As the AMC 12 satellite was transferred to New Skies Satellite, the Astra 4A designation has been allocated to the sub-Saharan Africa beam of Sirius 4.
Nation: | Sweden |
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Type / Application: | Communication |
Operator: | SES Sirius AB (ex Nordiska Satellitaktiebolaget, NSAB) |
Contractors: | Lockheed Martin |
Equipment: | 52 Ku-band transponders, 2 Ka-band transponders |
Configuration: | A2100AXS |
Propulsion: | LEROS-1c |
Power: | 2 deployable solar arrays, batteries |
Lifetime: | 15 years |
Mass: | 4385 kg |
Orbit: | GEO |
Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks |
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Sirius 4 (Astra 4A) | 2007-057A | 17.11.2007 | Ba LC-200/39 | Proton-M Briz-M (Ph.1) |
| | Further Astra missions: Astra 1A [AS-4000] Astra 1B [AS-5000] Astra 1C, 1D [HS-601] Astra 1E, 1F [HS-601] Astra 1G, 1H, 2A, 2C [BSS-601HP] Astra 1K [Spacebus-3000B3S] Astra 1KR [A2100AXS] Astra 1L [A2100AXS] Astra 1M [Eurostar-3000] Astra 1N [Eurostar-3000] Astra 1P [Spacebus-NEO-200] Astra 1Q [Space Inspire] Astra 2B [Eurostar-2000+] Astra 2D, 3A [BSS-376HP] Astra 2E, 2F, 2G [Eurostar-3000] Astra 3B [Eurostar-3000] Astra 4A [Spacebus-4000C3] Astra 4A [A2100AXS] Astra 4B [SSL-1300] Astra 5A [Spacebus-3000B2] Astra 5B [Eurostar-3000] |
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