Amazonas 4A commercial communications satellite ready for launch

21 March 2014

Orbital Sciences Corp. (NYSE: ORB) said that it is in final preparations for the launch of the Amazonas 4A commercial communications satellite.

Orbital designed, built and tested the geosynchronous Earth orbit satellite at its Dulles, VA production facilities for HISPASAT S.A. of Spain. The Amazonas 4A spacecraft, which will provide Ku-band communications services to South America, is scheduled to be launched aboard Arianespace´s Ariane 5 ECA rocket from Kourou, French Guiana on Friday, March 21, 2014 at approximately 6: 05 p.m. (EDT).

Following its deployment into a geosynchronous transfer orbit, the Amazonas 4A satellite will undergo several weeks of in-orbit testing to verify that all major subsystems are operating as planned. Once testing is complete, the spacecraft will be commanded to fire its thrusters to position it at a final orbital location of 61 degrees West Longitude. Day-to-day operations of Amazonas 4A will then be transferred to HISPASAT´s operational team in Madrid.

Orbital develops and manufactures small- and medium-class rockets and space systems for commercial, military and civil government customers. Its website is at http://www.orbital.com and on Twitter @OrbitalSciences.

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