Kosmos (Unknown Payload)

Overview

Destination: Sun-Synchronous Orbit
Mission: Government/Top Secret

Sun-Synchronous Orbit 43/4 (43R) Plesetsk Cosmodrome, Russian Federation

Unknown satellite(s) for the Russian military.

Updates

Cosmic_Penguin • April 11, 2026, 3:40 a.m.

Added launch per NOTAMs; Payload and launch vehicle variant identities uncertain.
Launch expected between April 13/14 - 29/30 between 21:00-16:00 UTC daily.


Cosmic_Penguin • April 17, 2026, 12:47 a.m.

Liftoff.
Note: Launch time is approximated.
Payload identities and usage of upper stage is uncertain.


Cosmic_Penguin • April 17, 2026, 4:10 a.m.

Tweaked estimated launch time based on orbital tracking data.


Cosmic_Penguin • April 17, 2026, 3:41 p.m.

Launch success.


Soyuz 2.1b/Volga

Family:
Configuration: Volga

Specifications
  • Minimum Stage
    2
  • Max Stage
    3
  • Length
    46.3 m
  • Diameter
    2.95 m
  • Fairing Diameter
  • Launch Mass
  • Thrust
    4149.0 kN
Family
  • Name
    Soyuz 2.1b/Volga
  • Family
  • Variant
    Volga
  • Alias
  • Full Name
    Soyuz 2.1b Volga
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity

Progress Rocket Space Center

Progress Rocket Space Center

(PRSC)

CEO: Dmitry Baranov Founded: 1996 Successes: 44 Failures: 1 Pending: 0

Agency Type:

Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles.

INFO WIKI

Plesetsk Cosmodrome, Russian Federation

43/4 (43R)


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