Astra 1M

Astra 1M is a Luxembourgian geostationary communications satellite which is operated by SES. It is positioned in geostationary orbit at a longitude of 19.2 degrees East, from where it is used to provide direct-to-home broadcasting to Europe.

Astra 1M
Mission typeCommunication
OperatorSES
COSPAR ID2008-057A
SATCAT no.33436
WebsiteSES - Astra 1M
Mission duration15 years (planned)
Spacecraft properties
BusEurostar 3000S
ManufacturerAstrium
(now Airbus Defence and Space)
Launch mass5,344 kilograms (11,782 lb)
Power8.3–9.3 kW
Start of mission
Launch date5 November 2008, 20:44:20 (2008-11-05UTC20:44:20Z) UTC
RocketProton-M/Briz-M
Launch siteBaikonur 200/39
ContractorILS
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude19.2° East
SlotAstra 19.2°E
Perigee altitude35,788 kilometres (22,238 mi)[1]
Apogee altitude35,795 kilometres (22,242 mi)[1]
Inclination0.03 degrees[1]
Period1436.05 minutes[1]
Epoch21 January 2015, 01:56:10 UTC[1]
Transponders
Band36 J band (IEEE Ku band)
Bandwidth26 megahertz
33 megahertz
TWTA power150 watts
EIRP53 decibel-watts
 

History

Astra 1M was built by Astrium (now Airbus Defence and Space) under a contract signed in 2005, and is based on the Eurostar 3000S satellite bus. It is equipped with thirty six transponders operating in the J band of the NATO-defined spectrum, or the Ku band of the older IEEE-defined spectrum. At launch it had a mass of 5,344 kilograms (11,782 lb),[2] with an expected operational lifespan of around 15 years,[3] however four of its transponders will be deactivated five years after launch.[4] At the beginning of its operational life, it had a maximum power consumption of 9.3 kilowatts, which is expected to have decreased to 8.3 kilowatts by the end of the satellite's operational life.[2]

The launch of Astra 1M was conducted by International Launch Services, using a Proton-M carrier rocket with a Briz-M upper stage. The launch occurred from Site 200/39 at the Baikonur Cosmodrome in Kazakhstan, at 20:44:20 GMT on 5 November 2008.[5] Astra 1M was successfully placed into a geosynchronous transfer orbit, from which it raised itself to geostationary orbit by means of an onboard apogee motor.

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See also

References
  1. "ASTRA 1M Satellite details 2008-057A NORAD 33436". N2YO. 21 January 2015. Retrieved 25 January 2015.
  2. "Astra 1M". SES Astra. Retrieved 31 May 2010.
  3. "UCS Satellite Database". Union of Concerned Scientists. 1 April 2010. Archived from the original on 3 June 2010. Retrieved 31 May 2010.
  4. Krebs, Gunter. "Astra 1M". Gunter's Space Page. Archived from the original on 29 May 2010. Retrieved 31 May 2010.
  5. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Archived from the original on 7 May 2010. Retrieved 31 May 2010.
  • IMS Official provider's site
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