May 13, 2005

Payload: DIRECTV 8
Loral 1300 platform
Separated mass: approx. 3,711 kg (8,181 lbs)

Launch Vehicle: Proton M/Breeze M

Weight at liftoff: 691,272 kg (1.5 million lbs), including payload

Height: 58 m (191 ft)

Launch Date: Saturday, May 21, 2005

Launch Window Opens: 11:59 p.m. Baikonur
17:59 GMT
1:59 p.m. EDT
10:59 a.m. PDT

Launch Site: Baikonur Cosmodrome, Kazakhstan
Launch Pad 39

End User: DIRECTV, Inc., leading U.S. direct-to-home entertainment provider

Satellite Manufacturer: Space Systems/Loral, Palo Alto, Calif.

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

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

Satellite Use: Reinforce DIRECTV's satellite fleet & support expansion of new digital and high-definition services

Satellite Statistics:

2nd DIRECTV satellite launched by ILS on Proton
Orbital location: 101 degrees West longitude
16 Ku-band transponders with 226 watts
Ka-band payload to link broadcast facilities
Anticipated service life of 12 years

Mission Profile: The Proton launch vehicle will inject the DIRECTV 8 satellite into geosynchronous transfer orbit. The first three stages will use a standard ascent trajectory to place the Breeze M upper stage with the satellite into a suborbital trajectory, from which the Breeze M will place itself and the spacecraft into a circular support orbit of 173 km (107.5 mi), inclined at 51.6 degrees. Then the Breeze M will ignite four more times to propel the satellite to its target geosynchronous transfer orbit of 35,786 km x 15,130 km (22,236 mi x 9,401 mi), inclined at 7.9 degrees. 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 mi).

Spacecraft Separation: Approximately 9 hours, 15 minutes after liftoff

ILS Mission Statistics:

4th ILS mission this year
2nd ILS Proton mission this year
33rd ILS mission on Proton since formation of the U.S.-Russian joint venture in 1995

Live Broadcast: Intelsat Americas 6, transponder 11, C-band
Location: 93 degrees West
Downlink frequency 3920 MHz vertical
Signals to begin at 1:15 p.m. EDT

More Information: Live webcast and general mission information will be available on the ILS web site at Launch status updates are available on the ILS U.S. domestic Launch Hotline at 1-800-852-4980.

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