ILS to Launch Inmarsat Satellite on Atlas V

Payload: Inmarsat 4-F1 Geosynchronous multi-use communications satellite Separated mass: Approx. 5,945 kg (13,106 lbs) Launch Vehicle: Atlas V, 431 configuration, designated AV-004 -- 4-meter diameter (13.75 ft) Extra Extended Payload Fairing (13.8 m/45.4 ft) -- 3 strap-on solid rocket boosters, built by Aerojet, Sacramento, Calif. -- Single-engine Lockheed Martin Centaur upper stage RD-180 main engine, from Pratt & Whitney/Energomash Weight at liftoff: 479,699 kg (1,057,575 lbs) with payload Height: 59 m (194 ft) Launch Date: Thursday, March 10, 2005 Launch Window: 15 minutes 4:42-4:57 p.m. EST 21:42-21:57 GMT Launch Site: Cape Canaveral Air Force Station, Fla. Launch Complex 41 End User: Inmarsat Ltd., London Satellite Manufacturer: EADS Astrium, Toulouse, France Launch Vehicle Atlas vehicle and Centaur upper stage built by Manufacturer: Lockheed Martin Space Systems in Denver, Colo.; San Diego, Calif.; and Harlingen, Texas. Launch Services Provider: International Launch Services, McLean, Va. Satellite Use: First in next generation of satellites, which will support Inmarsat's new Broadband Global Area Network (BGAN), delivering internet and intranet content and solutions, video-on-demand, videoconferencing, fax, e-mail, phone and LAN access at speeds up to 432kbit/s almost anywhere in the world. BGAN will also be compatible with third-generation cellular systems. Satellite Statistics: -- Eurostar E3000 model -- Largest and most powerful commercial communications satellite launched by Atlas to date -- C- and L-band -- Capability for more than 200 spot beams -- Operating position 65 degrees East longitude -- 13 years targeted lifetime Mission Profile: Atlas V will place Inmarsat 4-F1 into orbit with a super-synchronous transfer orbit mission, using a parking orbit ascent trajectory design with two Centaur burn phases. The mission employs a guidance-commanded shutdown. The satellite's own attitude and orbital control system will perform a series of burns to lower apogee and raise perigee to geosynchronous altitude, circularize orbit and reduce inclination. Spacecraft Separation: About 32 minutes after liftoff Orbital Parameters: Apogee Altitude: 48,864 nm (90,497.5 km) (@ Separation) Perigee Altitude: 237.6 nm (4,40 km) Inclination: 20.83 deg ILS Mission Statistics: -- 5th commercial flight of Atlas V -- 2nd Atlas flight in 2005 -- 3rd ILS mission this year -- Atlas family has perfect record in 75 consecutive flights NEWS MEDIA ACTIVITIES All times are EST unless otherwise indicated Remote Camera Set-up: Meet at Cape Canaveral Air Force Station Pass & ID at 4 p.m. Wednesday, March 9, for transfer to van that will take you to Pad 41. Media Briefing: Pre-launch news conference at 11:30 a.m. Wednesday, March 9, at the Florida Space Authority building, 100 Spaceport Way, outside CCAFS Gate 1. Vehicle Rollout: Access limited to 15 journalists, reservation required. RSVP with Julie Andrews of Lockheed Martin at 321-853-1567. Meet at CCAFS Pass & ID at 6:30 a.m. Thursday, March 10, for escort to Pad 41. Launch Viewing: We will use the Kennedy Space Center Press Site. Meet at CCAFS Pass & ID at 2:45 p.m. Thursday, March 10, for Air Force escort. Live Broadcast: In the U.S., Intelsat IA-6, transponder 9, C-band, 93 degrees West, downlink frequency 3880 MHz (vertical). In Europe, New Skies NSS 7, transponder ENV1/EUH1 Ch 2, Ku-band, 338 degrees East, downlink frequency 10995.50 (horizontal); symbol 6.1113, FEC 3/4 Test signals begin about 4 p.m. EST (21:00 GMT). More Information: General mission information and a live webcast of the launch will be available on the ILS website at Launch status updates will be available on the ILS U.S. domestic Launch Hotline at 1-800-852-4980. Contacts International Launch Services (ILS) Fran Slimmer, 571-633-7462 Mobile: 646-229-4801 Cape Canaveral: 321-476-5283 or Lockheed Martin Julie Andrews, 321-853-1567 Mobile: 321-750-1000

Source: ILS
Date: Mar 4, 2005

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