JSC Academician M.F. ReshetnevInformation Satellite Systems

Long-lived SESAT satellite ends service

The long-lived satellite mission is winding down. SESAT was the first international project carried out by ISS-Reshetnev Company jointly with a foreign contractor.

EUTELSAT, a company operating SESAT, announced its decision to decommission the satellite at the end of 2017. SESAT, the first satellite built by ISS-Reshetnev Company for a foreign customer, was designed for a 10-year mission but eventually achieved a 17 years and 10 months lifetime. Commenting on the experience of operating the SESAT satellite, EUTELSAT specialists said that they had been pleased with the performance of the satellite during its mission, especially ease of its operation.

The process of deorbiting the satellite from its location on the geostationary orbit to a graveyard orbit commenced on January 29, 2018. The deorbiting operations are performed at the operator’s mission control center by a joint team of EUTELSAT and ISS-Reshetnev specialists. As specified in the contract between EUTELSAT and ISS-Reshetnev, ISS-Reshetnev Company is responsible not only for the satellite development and production, but also for technical support of the operator throughout the satellite’s life in orbit. SESAT retirement to the graveyard orbit is expected to be fully completed on February 8.

SESAT (Siberian-European Satellite) was the first communications satellite built by a Russian company for a foreign operator. It was designed and built by ISS-Reshetnev Company for a European telecommunications satellite organization EUTELSAT. Payload of the satellite was subcontracted to Thales Alenia Space.

SESAT was the first Russian satellite designed for a 10-year mission life and the first project implemented in compliance with the international space standards. SESAT was launched on April 18, 2000 to provide television broadcasting, Internet access, data communications, fixed and mobile communications services.