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Mission record

Cosmos 111

Also known as Kosmos 111

U.S.S.R · Launched

Explore trajectory

Failed · Failure

Soviet Ye-6S spacecraft intended to orbit the Moon; the Blok-L upper stage lost roll control and failed to fire it out of Earth parking orbit onto a lunar trajectory, so it was designated Cosmos 111 and reentered two days after launch.

Destinations
Launch vehicle
Molniya-M
Launch site
Tyuratam (Baikonur Cosmodrome), U.S.S.R
Countries
Soviet Union
Mission types
Orbiter

Chronology

Mission timeline

  1. Milestone

    Blok-L upper stage lost roll control and failed to fire the spacecraft into a lunar trajectory

    Earth

  2. Mission end

    Cosmos 111 reentered two days after launch

    Earth

  3. Launch

    Cosmos 111 launched into Earth parking orbit

    Earth

Mission architecture

Vehicles

  • Cosmos 111 · Spacecraft

    Destinations: Moon

    • Cosmos 111 lunar orbiter module · Orbiter

      Destinations: Moon

Trajectory record

Trajectory dataset not yet available

Known dates and encounters do not uniquely determine a flight path. This mission’s sourced timeline is available above; no verified trajectory is currently published here.

What is needed to reconstruct this path?
  • A frame-qualified position and vector velocity at an epoch, or equivalent complete orbital elements.
  • Separate state histories and release epochs for the listed vehicles; a parent mission trajectory cannot be assigned to every component.
  • Finer event-time constraints where required by an orbital reconstruction; the stored day/month/year precision is retained.
  • The actual failed-flight state history. Intended destinations are not evidence that the spacecraft reached them.

Provenance

Sources

Each source is listed once and labeled with the mission, event, trajectory, or destination/body context it supports.

Data verified through August 24, 2026