SESAT Launched On Proton

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SESAT Launched On Proton

A Russian Proton rocket successfully launched SESAT (Siberia-Europe Satellite) from launch pad 39 in Area 200 at the Baikonur Cosmodrome at 2:06 PDT (2106 UTC) on April 17. Unlike many commercial GEO telecommunication satellites, SESAT will be injected directly into its geosynchronous orbit, instead of into a more typical geosycnrhronous transfer orbit. The 18-transponder Ku-band satellite will be positioned at the 36°E, with an expected life of 10 years, and 5.7 kW end-of-life power. The satellite was built by NPO Prikladnoi Mekhaniki (NPO PM), Krasnoyarsk, with the communications payload supplied by Alcatel Space. The 2,500 kg SESAT, owned by Eutelsat, is scheduled to go into service in June. (Four of the transponders will be operated by Intersputnik.) The satellite has two beams, one stretched widebeam to cover Europe, western Siberia, North Africa and the Middle East, and a steerable spotbeam to serve India. Up to six of the 18 transponders on the satellite can be switched one by one into the steerable beam. Communications can be established between the widebeam and the steerable beam and also within the steerable beam in order to offer users a high degree of operational flexibility. The Ku band downlink frequencies in use are: 10.95-11.20 GHz, 11.45-11.70 GHz,12.50-12.75 GHZ.

More information:

Proton Data Sheet

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April 17, 2000