Intelsat 19 is a commercial communications satellite that was built by Space Systems Loral of Palo Alto, California and will be operated by Intelsat Ltd., Luxembourg. The Spacecraft is based on the flight-proven LS-1300 Platform and has a liftoff mass of 5,600 Kilograms. In orbit, it will be 26 by 9 by 8 meters in dimensions when fully deployed. It features a main payload of 34 Ku-Transponders that will cover Australia and the Pacific Ocean region, and 24 C-Band Transponders that will provide coverage of Australia, New Zealand, Southeast Asia, Japan, and the Western United States. The Ku Payload will provide Direct to Home television to Australia. The Satellite is equipped with two deployable solar arrays for power generation. This power generation system will provide 15 Kilowatts of electrical power for the payload at the end of the satellite’s life. A propulsion system featuring an R-4D-11 Main Engine will be used for orbit adjustments and for maneuvers after insertion to reach the vehicle’s final position in Geostationary Orbit. R-4D has a dry mass of 3.76 Kilograms and is 0.55 meters in length with a nozzle diameter of 0.3 meters. It provides 489 Newtons of thrust burning Monomethylhydrazine and Mixed Oxides of Nitrogen as propellants.
The engine has no burn limitations; its longest demonstration burn was 200 minutes in duration. Intelsat 19 is the replacement for Intelsat 8 and will be positioned at 166 degrees East longitude. It will stay operational for at least 15 years.