picture of the encyclopedia
previous next
Version 0.81 comes with a new web design! Please allow popups for navigation.

Eutelsat W3B


Designation 37206 / 10056A
Launch date 28 Oct 2010
Country of origin Europe
Mission Telecommunications
Geostationary orbit 16°E
Launch vehicle Ariane V197

Was to be delivered in-orbit. Declared a total loss. Was fully insured.

Was planned to be used at 7°E, but the failure of Eutelsat W2M caused it to be reaffected to 16°E. The 7°E slot had been at the centre of a dispute with SES over the use of a further Eutelsat position at 4°E and the established SES-Sirius position of 5°E.

End of life

Out of service Oct 2010
Cause Leak in the propulsion system: a pipe was not properly aligned and did not withstand the stress of the launch

sat-index articles

Technical data

EIRP coverage (dBW)

Europe A
South East Africa
Europe B
Europe C


Prime contractor Thales Alenia Space
Platform Spacebus-4000C3
Mass at launch 5370 kg
Dry mass  
Dimension 5.8 x 2.0 x 2.2 m (34 m deployed)
Solar array  
Stabilization 3-axis
DC power EOL: 12 kW
Design lifetime 15 years

Has 3 deployable and 2 fixed beams.


Main transponders 53
Backup transponders  
Coverage Wide coverage of Europe, Middle East and Northern Africa
Europe and Turkey with high power
Sub-saharian Africa
Specific islands of the Indian Ocean
EIRP max  
G/T max  
Frequencies downlink: 10.7-11.7 & 12.5-12.75 GHz


Main transponders
Backup transponders  
EIRP max  
Frequencies Uplink:
Downlink: 21.4-22.0 GHz

© TBS Internet, all rights reserved. All reproduction, copy or mirroring prohibited. Legal notice
francais anglais contact