SIRIUS has not announced plans to utilize the second launch announced today.

The Proton booster and the Breeze M upper stage are built by ILS' Russian partner, Khrunichev Space Center of Moscow. The Proton vehicle launches from the Baikonur Cosmodrome in Kazakhstan.

"We thank SIRIUS for selecting Proton, and for its long-term relationship with ILS," said ILS President Frank McKenna. "We launched SIRIUS' initial constellation of three satellites in 2000. Proton has the ideal performance for SIRIUS, with both its heavy-lift capability and its flexibility to carry spacecraft to various orbits."

ILS is a joint venture of Space Transport Inc., along with Khrunichev Space Center and RSC Energia of Moscow. ILS has exclusive rights to market the Proton, Russia's premier heavy-lift vehicle, to commercial satellite operators worldwide. The Proton has a heritage of 333 missions since 1965.

Proton builder Khrunichev is one of the cornerstones of the Russian space industry. It was created from the merger of the Khrunichev Machine-building Plant and the Salyut Design Bureau 15 years ago. The company includes among its branches a number of key manufacturers of launch vehicle and spacecraft components in Moscow and in other cities of the Russian Federation.

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