Media Advisory: ILS Proton to Launch JCSAT-11 Payload: JCSAT-11, A2100 AX platform Separated Mass: Approx. 4,000 kg (8,818 lbs) Launch Vehicle: Proton M/Breeze M Weight at Liftoff: 691,272 kg (1.5 million lbs), including payload Height: 57.2 m (186.6 ft) Launch Time: 04:43 Sept. 6 Baikonur; 07:43 Sept. 6 Tokyo; 22:43 Sept. 5 GMT; 18:43 Sept. 5 EDT Launch Site: Baikonur Cosmodrome, Kazakhstan, Launch Pad 39 End User: JSAT Corporation, Tokyo, Japan Satellite Manufacturer: Lockheed Martin Commercial Space Systems, Newtown, Penn. Launch Vehicle Manufacturer: Khrunichev State Research and Production Space Center, Moscow Launch Services Provider: International Launch Services, McLean, Va. Satellite Use: Multipurpose communications satellite to serve as a backup satellite for the JSAT fleet. It will provide coverage over Japan, the Asia-Pacific region, Oceania and Hawaii. Satellite Statistics: 30 active Ku-band transponders
12 active C-band transponders
In-orbit backup satellite
Anticipated service life of 15 years
Mission Profile: The Proton launch vehicle will inject the satellite into geosynchronous transfer orbit, using a four-burn Breeze M mission design. The first three stages of the Proton will use a standard ascent trajectory to place the Breeze M fourth stage, with the satellite, into a suborbital trajectory, from which the Breeze M will place itself and the spacecraft into a circular reference, or parking, orbit of 192 km (119.3 miles), inclined at 51.5 degrees. Then the satellite will be propelled to its transfer orbit by additional burns of the Breeze M. Following separation from the Breeze M, the spacecraft will perform a series of liquid apogee engine burns to raise perigee, lower inclination and circularize the orbit at the geostationary altitude of 35,786 km (22,236 miles). Target Orbit at Separation: Apogee: 35,786 km (22,236 miles); Perigee: 5,032 km (3,139 miles); Inclination: 21.4 degrees Spacecraft Separation: Approximately 6 hours, 56 minutes after liftoff ILS Mission Statistics: 1st Proton launch for Japanese customer
3rd ILS mission for 2007
42nd ILS mission on Proton
9th Proton launch of A2100 bus
327th Proton launch
Live Broadcast in North America: Galaxy 26, transponder 9, 93 degrees West, C-band, analog NTSC, downlink 3880 MHz (vertical). Test signals start at 6 p.m. EDT. Live Feed for Europe and Asia: New Skies NSS-7, transponder NAV6/EUH6, 338 degrees West, Ku-band, digital PAL downlink 11534.65 MHz (horizontal), symbol rate 2.46, fec: 3/4. Test signals start at 2200 GMT. More Information: Live webcast and general mission information are available on the ILS web site at www.ilslaunch.com. Launch status updates are available on the ILS U.S. domestic Launch Hotline at 1-800-852-4980. ### Contact: Fran Slimmer, ILS, McLean, Va.;1-571-633-7462, mobile: +1-646-229-4801; f.slimmer@ilslaunch.com
A Proton rocket
A Proton rocket which was intended to launch the JCSAT-11 satellite into a geostationary transfer orbit lifted off and successfully completed its first stage burn, but the second stage failed leading to loss of the rocket and satellite.

The launch vehicle was a Proton M booster with a Breeze M upper stage. More than 300 Proton rockets have been launched, all from the Baikonur Cosmodrome in Kazakhstan. Following the launch failure, Kazakhstan suspended the launch of Proton rockets from Baikonur, Interfax news agency reported.

JSAT Corporation immediately placed an order with Lockheed Martin, the satellite manufacturer, for an identical replacement satellite based on the A2100AX design.