Six Intelsat satellites had previously been delivered to the target orbit with Proton, including February 12 this year.
Intelsat-21 is being manufactured now in the Boeing workshops. The device is intended to replace the Intelsat-9 and will work with subscribers in the Western Hemisphere and Europe, providing digital broadcasting, telephony and broadband Internet access services.
Orbital Sciences Corporation will produce Intelsat-23 (launch mass 2.73 tones). It will provide communication services to subscribers in North and South America, Europe and Africa.
ILS is situated in Washington's suburb Reston promoting the "Khrunichev State Research and Production Space Center" Proton and Briz-M services to the international market.
The company was established by Lockheed Martin Corporation, Khrunichev State Research and Production Space Center and RSC "Energia" in 1995. In 2006, Lockheed Martin Corporation withdrew from the partnership with his rocket "Atlas" by selling a majority stake to German businessman Mario Lemma. Khrunichev Space Center bought this share in May 2008. ILS has carried out 57 launches of Proton since 1996.