On May 4, 2011 at 21:41:33 MSK (17:41:33 UTC) the Space Forces performed a successful launch of a Soyuz-2.1a launcher from the launch pad No. 4 of the launch complex No. 43. The launcher, equipped with a Fregat booster stage, delivered into orbit a new communication satellite of the Meridian type.
The satellite received NORAD number 37398 and the international designation 2011-018A. It is known as Meridian-4. Previous launch of a Meridian satellite took place in November 2010.