Media Advisory: ILS Proton to launch Inmarsat-4 F3 satellite
Aug. 13, 2008
Payload:
Inmarsat-4 F3 communications satellite
Eurostar 3000GM bus
Separated spacecraft mass: Approx. 13,140 lbs (5,960 kg)
Launch Vehicle:
Proton M/Breeze M
Weight at liftoff: 702,000 kg (1,547,000 lbs), including payload
Height: 58.2 m (191 ft)
Launch Date:
August 19 (Baikonur)
August 18 (GMT, London, U.S.)
Launch Time:
04:43 Baikonur
23:43 London
18:43 EDT
22:43 GMT
Launch Site:
Baikonur Cosmodrome, Kazakhstan
Launch Pad 39
Launch Customer:
Inmarsat, London
Satellite Manufacturer:
EADS Astrium, France
Launch Vehicle Manufacturer:
Khrunichev State Research and Production Space Center,
Moscow
Launch Services Provider:
International Launch Services (ILS), Reston, Va.
Satellite Use:
Mobile broadband services, delivering enhanced voice and high-speed data services to users on land, at sea and in air across the globe.
Satellite Statistics:
• L-Band, C-Band, Nav Band, and TTC Band
• Orbital location: 98 degrees West longitude
• Anticipated service life into the 2020’s
Mission Profile:
The Proton M launch vehicle, utilizing a 5-burn Breeze M mission design, will lift off from Pad 39 at Baikonur Cosmodrome, Kazakhstan, with the Inmarsat-4 F3 satellite on board. The first three stages of the Proton will use a standard ascent trajectory to place the Breeze M fourth stage and the Inmarsat-4 F3 satellite into a suborbital trajectory from which the Breeze M will then place itself and the spacecraft into a low Earth circular parking orbit. Once Inmarsat-4 F3 is in the parking orbit, it will be injected into a geosynchronous transfer orbit following four additional burns of the Breeze M.
Target Orbit at Separation:
• Apogee: 35,786 km (22,236 miles)
• Perigee: 4,271 km (2,654 miles)
• Inclination: 22.8 degrees
Spacecraft Separation:
Approximately 9 hours, 3 minutes after liftoff
ILS Mission Statistics:
• 3rd ILS launch of 2008
• 46th Proton launch for ILS
• 9th Eurostar satellite launched on Proton
Launch Broadcast times for ILS Proton Inmarsat-4 F3:
Test signals starting at 6:00 PM ET US 18 August 2008 (22:00 GMT)
Live coverage starting at 6:20 PM ET US 18 August 2008 (22:20 GMT)
Liftoff is scheduled for 6:43 PM ET US 18 August 2008 (22:43 GMT)
Launch Broadcast may be seen in the US on:
Carrier: INTELSAT
Satellite: GALAXY 28
Transponder 15C
C-Band Analog NTSC
Orbital Location: 89 degrees West
Bandwidth: 36 MHz
Downlink Frequency: 4000.00 MHz (V)
Launch Broadcast may be seen in Europe and Western Asia on:
Carrier: Newskies
Satellite: NSS-7
Transponder – WHL4/EUH3 Ch 1
Digital PAL (In Clear)
Bandwidth: 9 MHz
Orbital Location: 36 degrees East
Downlink Frequency: 11,095.600 (H)
Sym Rate 5.632
FEC 3/4
More Information:
Live webcast and general mission information are available on the ILS web site at http://www.ilslaunch.com/. Launch status updates are available on the ILS U.S. domestic Launch Hotline at 1-800-852-4980.
