Kosmos 2600-2608

Classified Russian military mission from Plesetsk: a Fregat-M upper stage deployed nine satellites designated Kosmos 2600 through 2608, with tracking placing the payloads in a sun-synchronous orbit.

Outcome

Success

Orbit

SSO

Sun-synchronous orbit

Payload to orbit

4 T (est.)

Flight

35th

of 36 Soyuz 2.1b Fregat-M flights

Date and time

5 February 2026, 18:59 UTC

Rocket

Soyuz 2.1b Fregat-M

Builder

Progress RSC

Launch site

43/4 (43R), Plesetsk Cosmodrome, Russian Federation

Payload

Government/Top Secret

International designator

2026-023

Launches in 2026

26th of 243

See it in orbit

Space Atlas shows the satellites and rocket stages from this launch in 3D.

View satellites in Space Atlas↗