The launch, slated for 15:31 Moscow time on Sunday, will be the first in this year's program. The contract to orbit the Inmarsat 5F2 was inked by the Russian-American International Launch Services Company ISL.

The Inmarsat-5F2, developed by Boeing Satellite Systems on a commission from Britain's satellite communications operator Inmarsat, is the second of three 5th generation Inmarsat satellites.

It is designed to provide communications services in North and South America, as well as in the Atlantic region.

The first of these satellites was successfully launched by a Proton-M carrier rocket in December 2013.

The Proton rocket is due to put the British satellite in a super-synchronous transfer orbit at an altitude of 65,000 kilometers.

The launch had earlier been postponed from January 30 to February 1 upon the customer's request, due to technical reasons linked to pre-launch preparations of the spacecraft.