History
On April 2, 2007, JSAT Corporation (now SKY Perfect JSAT Group) announced an agreement to purchase a payload consisting of five transponders on the yet to be built Intelsat 15. Intelsat and JSAT had already collaborated on the Horizons-1 and Horizons-2 satellites. The satellite, also known as IS-15, would provide services to the Asia-Pacific, Indian Ocean and Middle East regions from the 85°E longitude on the geostationary orbit, where it would replace Intelsat 709. It would have 22 Ku band transponders in total and a design life of 15 years. The JSAT payload would be known as JCSAT-85.
On May 1, 2007, Orbital Sciences Corporation (now Orbital ATK) announced that it had been awarded a contract to manufacture Intelsat 15. It would be based on the STAR-2 satellite bus, generate 4.6 kW of power for its 22-transponder Ku band payload and had an expected launch date of early 2009.
On February 26, 2008, Sea Launch announce a contract with Intelsat to launch two satellites manufactured by Orbital Corporation, Intelsat 15 and Intelsat 16. The contract was itself a renegotiation for repurpose two already existing reservation by Intelsat with Sea Launch for two satellites to these new spacecraft. They were expected to be launched by the Land Launch service, which used Zenit-3SLB rockets from the Baikonur Cosmodrome in Kazakhstan, during 2009.
Between October 27 and November 5, 2009 Intelsat 15 was processed in the Baikonur Cosmodrome. On November 6, it was filled with propellant. On November 24, 2009, JSAT announced that the launch of Intelsat 15 was expected on November 29 at 1:00 UTC. But during the launch attempt on November 29, the automatic prelaunch issued an abort command. But the launch committee agreed to make a second attempt on the next day.
On November 30, 2009, at 21:00 UTC, the Zenit-3SLB successfully launched Intelsat 15, from Baikonur Cosmodrome Site 45. After a six and a half hour mission, the DM-3SLB successfully separated the spacecraft and at 03:28 UTC, first signals from spacecraft were received. The launch put the satellite with margins of its planned geosynchronous transfer orbit with a perigee of 10,286 km, an apogee of 35,790 km and a 12° inclination to the Equator.
