Eutelsat 5 West B

Eutelsat 5 West B is a geostationary communications satellite. It is owned by French satellite communications company Eutelsat. It launched on October 9, 2019 at 10:17 UTC on a Proton-M rocket from Baikonur Cosmodrome in Kazakhstan.[7] The satellite was built by Northrop Grumman and Airbus Defence and Space and has an expected operational life of more than 15 years. Situated at 5° west, it broadcasts satellite television, radio and other digital data. It was scheduled to enter operational service at the end of 2019, but deployment difficulties delayed service.

Eutelsat 5 West B
Mission typeCommunications
COSPAR ID2019-067A[1]
SATCAT no.44624
Mission durationmore than 15 years (anticipated)[2]
Spacecraft properties
BusGEOStar-2e [3]
ManufacturerNorthrop Grumman Innovation Systems (NGIS) for Satellite bus and Airbus Defence and Space for Payload[4]
Launch mass2,740 kilograms (6,040 lb) [5] or 2,864 kilograms (6,314 lb) [6]
Start of mission
Launch date9 October 2019, 10:17 (2019-10-09UTC10:17Z) UTC
Launch siteBaikonur Cosmodrome
Orbital parameters
Reference systemGeocentric
Band35 Ku
Coverage areaEurope, North Africa


On 24 October 2019 Eutelsat released a statement saying the company was investigating an incident on one of the bird's two solar arrays.[8]

On 17 January 2020 Eutelsat issued a statement saying that one of the two arrays was unusable, and the resulting power shortage meant that the satellite could operate at only 45% capacity. The satellite was expected to enter service in late January 2020. The satellite was planned to replace the Eutelsat 5 West A. However, due to the power shortage, Eutelsat 5 West A would remain operational for longer than originally planned in a fuel-saving inclined orbit. This extension is one part of the mitigation activities. Eutelsat 5 West B's problems will cost Eutelsat several million euros. Eutelsat had not decided (as of January 17 the size of the ensuing insurance claim.[9]

The European GNSS Agency's GEO-3, a hosted payload of the Eutelsat West B, was not affected by the power loss and is expected to function normally. It entered service on February 14, 2020.[10]