* Astronomy

Blobrana · L

RE: JCSAT-11 satellite

Blobrana · L

ILS Proton to Launch JCSAT-11

Payload: JCSAT-11, A2100 AX platform

Separated Mass: Approx. 4,000 kg

Launch Vehicle: Proton M/Breeze M

Weight at Liftoff: 691,272 kg, including payload

Height: 57.2 m

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, 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.

Target Orbit at Separation: Apogee: 35,786 km; Perigee: 5,032 km; Inclination: 21.4 degrees

Spacecraft Separation: Approximately 6 hours, 56 minutes after liftoff

Source ILS

Blobrana · L

The launch of the JCSAT-11 communications satellite atop a Proton booster rocket from the Baikonur Cosmodrome is still scheduled for 6th September.
A An-124-100 Ruslan aircraft delivered the Briz-M booster on Tuesday to the Yubileiny airfield.

Source Khrunichev State Space Research-and-Production Centre

Blobrana · L

A Russian Proton-M rocket will put into orbit the Japanese telecom satellite JCSAT-11 from the Baikonur spaceport on September 6, the Khrunichev Aerospace Centre announced.
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Blobrana · L

JSAT Corporation of Japan has contracted with International Launch Services (ILS) for launch of its JCSAT-11 satellite on a Proton Breeze M vehicle in 2007. The companies announced the deal at the Satellite 2006 conference in Washington, D.C. Financial terms were not disclosed.

This will be JSAT's fourth mission with ILS, and its first on a Proton, which launches from the Baikonur Cosmodrome in Kazakhstan. Previous flights, all successful, were on ILS Atlas vehicles from Cape Canaveral, Florida, ILS, a Lockheed Martin (NYSE:LMT) joint venture, markets launch services on the Proton, built by Khrunichev of Russia, and the Lockheed Martin-built Atlas, to satellite operators worldwide.

"ILS has been a launch partner with JSAT since 1995. We appreciate JSAT's confidence that the Proton Breeze M will be as reliable as the Atlas vehicles that launched the JCSAT 3, 4 and 6 satellites. Proton vehicles launched seven times in 2005, four times with ILS commercial missions and three times for the Russian government. The Proton Breeze M configuration has a 100 percent success rate in 13 missions.
JCSAT-11 is an A2100 model satellite built by Lockheed Martin Commercial Space Systems. ILS Proton vehicles have launched eight of this model already, "and we'll be welcoming the Lockheed Martin spacecraft team back to Baikonur four more times in the next two years, including for JCSAT-11" - ILS President Mark Albrecht.

"We chose the ILS Proton because it has the demonstrated reliability and launch tempo that JSAT established as criteria for the JCSAT-11 program. It is important for our company's business plan to launch JCSAT-11 in 2007 in order to enhance the security and versatility of our satellite system. We are pleased with the substantial flexibility ILS offers us. We are also honoured to become the first Japanese satellite operator to ride on a Russian-built vehicle"- Kiyoshi Isozaki, president and CEO of JSAT Corporation.

JSAT Corporation is a leading satellite operator in the Asia-Pacific region. The company owns and operates nine satellites in eight orbital slots, covering North America, Hawaii, Asia and Oceania. JSAT provides a range of services, including digital CS broadcasting service, SKY PerfecTV! satellite TV broadcasting, video and data broadcasting services for corporate and inter-company networks and international telecommunications services.