On 2 February 2021 at 23:45 MSK (20:45 UTC) the Space Forces conducted a successful launch of a Soyuz-2.1b space launcher from the launch pad No. 4 of the launch complex No. 43 of the Plesetsk test site. The launcher delivered into orbit a satellite designated Cosmos-2549.

Cosmos-2549, which received international designation 2021-008A and registered by NORAD as object 47546, is believed to be a Lotos-S1 electronic reconnaissance satellite of the Liana system.

Previous Lotos-S1 satellite, Cosmos-2528, was launched in October 2018.