January 28, 2005
Payload: AMC-12 communications satellite
Alcatel Space Spacebus 4000 platform
Separated spacecraft mass: Approx. 10,966 lbs (4,974 kg)Launch Vehicle: Proton M/Breeze M
Weight at liftoff: 691,272 kg (1.5 million lbs), including payload
Height: 61 m (200 ft)

Launch Date: Feb. 3 (Baikonur, GMT)
Feb. 2 (U.S.)

Launch Window Opens: 7:27 a.m. Baikonur
2:27 GMT
9:27 p.m. EST

Launch Site: Baikonur Cosmodrome, Kazakhstan
Launch Pad 24

Launch Customer: SES AMERICOM, Princeton, N.J.
Part of SES GLOBAL family of companies

Satellite Manufacturer: Alcatel Space, Cannes, France

Launch Vehicle Manufacturer: Khrunichev State Research and Production Space Center, Moscow

Launch Services Provider: International Launch Services (ILS), McLean, Va.

Satellite Use: Formerly called Worldsat-2, the AMC-12 is a high-power C-band satellite with three regional beams: North America, South America and Europe/Africa. It will support a wide range of communications applications.

Satellite Statistics:
1st Spacebus 4000 to be launched
3 regional beams
72 C-band transponders
Orbital location: 37.5 degrees West longitude
Anticipated service life of 16 years

Mission Profile: The Proton launch vehicle will inject the satellite into geosynchronous transfer orbit, using a five-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 support or reference orbit of 173 km (107 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 36,000 km (22,300 miles).

Target Orbit at Separation:
Apogee: 35,786 km (22,236 miles)
Perigee: 6,400 km (3,977 miles)
Inclination: 18.3 degrees

Spacecraft Separation: Approximately 9 hours, 20 minutes after liftoff

ILS Mission Statistics:
1st ILS Proton mission this year
5th ILS launch for SES AMERICOM in 12-month period
32nd ILS mission on Proton


Live Broadcast in U.S.: AMC-4, transponder 17 C-band, 101 degrees West, downlink 4040 MHz (vertical), analog.
Test signals start at 8:45 p.m. Feb. 2 EST.

In Europe, Russia & Kazakhstan: New Skies NSS-7, transponder ENV-1/EUH-1, Channel 2, Ku-band; 338 degrees West; bandwidth 9 MHz; FEC 3/4; downlink 10995.5 MHz (horizontal); symbol rate 6.1113.
Test signals start at 01:45 Feb. 3 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.



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