Eutelsat 139 West A
NamesEutelsat 12 West D
Eutelsat 31B
Eutelsat W3A (2004-2012)
Eutelsat 7A (2012-2021)
Mission typeCommunications
OperatorEutelsat S.A.
COSPAR ID2004-008A
SATCAT no.28187
Websitewww.eutelsat.com/en/home.html
Mission duration15 years (planned)
Spacecraft properties
SpacecraftEUTELSAT W3A
Spacecraft typeEurostar
BusEurostar-3000S
ManufacturerEADS Astrium
Launch mass4,300 kg (9,500 lb)
Dry mass2,000 kg (4,400 lb)
Power9.6 kW
Start of mission
Launch date15 March 2004, 23:06:00 UTC[1]
RocketProton-M / Briz-M
Launch siteBaikonur Cosmodrome, Site 81/24
ContractorKhrunichev State Research and Production Space Center
Entered service15 May 2004
Orbital parameters
Reference systemGeocentric orbit[2]
RegimeGeostationary orbit
Longitude139° West
Transponders
Band40 transponders:
38 Ku-band
2 Ka-band
Coverage areaAmericas
 

Eutelsat 139 West A is a communications satellite owned by Eutelsat S.A. Formerly placed at 7° East, it is currently placed at 139° West and broadcasts TV channels, radios and other digital data. It entered operational service on 15 May 2004.

Built by EADS Astrium on a Eurostar-3000S satellite bus, it is equipped with 42 Ku-band transponders broadcasting in the Americas (formerly Europe, North Africa, the Middle East and sub-Saharan Africa) and 2 Ka-band transponders.

It was launched on 15 March 2004 at 23:06:00 UTC by Proton-M / Briz-M from the Baikonur Cosmodrome. It had a launch mass of 4,300 kg (9,500 lb). Its estimated lifespan is 15 years.

It is equipped with Skyplex technique for multiplexing on board. It is the first geostationary satellite to use a lithium-ion battery.

It was used by the European Broadcasting Union's Eurovision network. It also broadcast the Turkish Digiturk offerings until early 2020 and numerous Internet connection services such as OpenSky, Hughes Europe or Skylogic.

Eutelsat 7A

In December 2011, Eutelsat announced, that their satellite assets will be renamed under a unified brand name effective from March 2012. This satellite became Eutelsat 7A.

References

  1. ↑ "Launch Log". Jonathan's Space Report. 14 March 2021. Retrieved 20 April 2021.
  2. ↑ "EUTELSAT 7A (Eutelsat W3A)". N2YO.com. Retrieved 20 April 2021.


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