Payload:
Inmarsat-5 F3 communications satellite
BSS-702HP Platform
Separated spacecraft mass: 6,070 kg
Launch Vehicle:
Proton M/Breeze M
705,000 kg (1,554,000 lb), including payload
58.2 m (191ft)
Launch Date:
August 28, 2015
Launch Time:
17:44 Baikonur
14:44 Moscow
12:44 London
11:44 GMT
07:44 ET
Launch Site:
Baikonur Cosmodrome, Kazakhstan
Launch Pad 39
Launch Customer:
Inmarsat, London, England
Satellite Manufacturer:
Boeing Satellite Systems International, California, USA
Launch Vehicle Manufacturer:
Khrunichev State Research and Production Space Center,
Moscow, Russia
Launch Services
Provider:
International Launch Services, Virginia, USA
Satellite Use:
Inmarsat Global Xpress (GX) will be the first globally available high-speed mobile
broadband network delivered by a single operator. It will be delivered over an initial
fleet of three Inmarsat-5 satellites and will offer the unique combination of global
coverage and the network reliability for which Inmarsat is renowned. Based on Ka-band
technology, GX will consistently deliver higher performance through more compact
terminals at a lower cost than existing VSAT services, making it accessible to many
more users.
Satellite Statistics:
__89 ka-band transponders
__Planned orbital location: 55° W
__Anticipated service life: 15 years
Mission Profile:
The Proton M launch vehicle, utilizing a 5-burn Breeze M Supersynchronous Transfer
Orbit mission design, will lift off from Pad 39 at Baikonur Cosmodrome, Kazakhstan,
with the Inmarsat-5 F3 satellite on board. The first three stages of the Proton will use a
standard ascent profile to place the orbital unit (Breeze M upper stage and the
Inmarsat-5 F3 satellite) into a sub-orbital trajectory. From this point in the mission, the
Breeze M will per-form planned mission maneuvers to advance the orbital unit first to a
circular parking orbit, then to an intermediate orbit, followed by a transfer orbit, and
finally to a supersynchronous transfer orbit. Separation of the Inmarsat-5 F3 satellite is
scheduled to occur approximately 15 hours, 31 minutes after liftoff.
Target Orbit at Separation:
Perigee: 4,341km
Apogee: 65,000 km
Inclination: 26.75 degrees
Spacecraft Separation:
Approximately 15 hours, 31 minutes after lift-off
ILS Mission Statistics:
_ 3rd ILS Proton Launch in 2015
_90 th ILS Proton Launch Overall
_ 5 th Inmarsat Satellite Launched on Proton
_19 th Boeing Satellite Launched on Proton
Live Broadcast:
Live Coverage starting at 07:30 ET/ 12:30 GMT
Launch is scheduled for 07:44 ET/ 12:44 GMT
Broadcast concludes no later than 08:00 EST/ 13:00 GMT
IN EUROPE AND LONDON, THE LAUNCH BROADCAST WILL BE SEEN ON THE FOLLOWING (HD):
EBU REF 15/053380/01
EUTELSAT 10A 10 deg East TXP B3 CHANNEL 12MHZ SLOT 3C12
UPLINK FREQ.: 14357 MHZ POL Y BY D-FRA-022 UP1
DOWNLINK FR.: 11057 MHZ POL X
HD 1080i 50Hz DVB-S2 8PSK 9.875 Ms/s FEC 3/4,
Pilot:on Roll-off 0.20 (MPEG4/H.264 4:2:0 21.503 Mbps)
AUDIO:1 SOUND MONO
AUDIO:2 SOUND MONO
Webcast can be seen at:
http://inmarsat5f3.imgondemand.com
Social Media: Follow us on Twitter (Inmarsat #I5F3) and “like” us on Facebook for mission updates.
More Information:
Live streaming will begin approximately 15 minutes before lift-off. General mission information and launch status updates are available at www.ilslaunch.com. You can also follow us on Twitter and “like” us on Facebook for mission updates.
Media Inquiries:
Karen Monaghan, Director of Communications and Customer Relations, International Launch Services, Reston, Va.; +1-571-633-7549; mobile: +1-571-282-5195; k.monaghan@ilslaunch.com.
Jonathan Sinnatt, Director of Corporate Communications, Inmarsat; +44 (0)20 7728 1935; +44 (0)788 960 5272; jonathan.sinnatt@inmarsat.com
Katie Potts, Corporate Communications Manager, Inmarsat; +44 (0)20 7728 1492; +44 (0)7843 518 245; Katie.potts@inmarsat.com