Soyuz-2-1v launches classified payload

Russian military completed its orbital launch attempts in 2023 firing the Soyuz-2-1v rocket on December 27. The vehicle carried spacecraft for the Ministry of Defense. It was the 11th mission of the light-weight Soyuz variant since its introduction in 2013.


Soyuz-2-1v rocket mission on Dec. 27, 2023, at a glance:

Payload designation
Kosmos-2574, Razbeg No. 1, MKA-V
Launch date and time
2023 Dec. 27, 10:03:44 Moscow Time (07:03 UTC, 2:03 a.m. EST)
Launch vehicle
Launch site
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According to the official statement of the Russian Ministry of Defense a Soyuz-2-1v rocket lifted off on Dec. 27, 2023, at 10:03 Moscow Time, from Plesetsk carrying spacecraft for the Ministry of Defense.

Reports distributed by the state-controlled media also said that the spacecraft had been successfully inserted into its planned orbit and that it had been taken under control by ground assets of the Russian Air and Space Forces, VKS. The spacecraft maintained stable communications with ground control and its systems functioned nominally, according to the military. Roskosmos listed the payload delivered during the launch as Kosmos-2574.

Based on the notifications to the air and sea traffic issued by the Russian authorities ahead of the launch, it appeared that the rocket ascended along the usual ground track required to reach orbit with an inclination of 97 degrees toward the Equator.

The US Space Force then tracked the payload associated with the launch in a 348 by 361-kilometer orbit with an inclination 96.8 degrees toward the Equator. In the following months, the satellite was detected performing small orbital maneuvers.

Around Feb. 22, 2024, a small fragment separated from the satellite and quickly began losing altitude, indicating a low-density object, such as a telescope cover.



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Page author: Anatoly Zak; Last update: February 25, 2024

Page editor: Alain Chabot

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