Mission Atlas
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Mission record

Pioneer P-30

Also known as Atlas-Able 5A, Pioneer-Y

NASA · Launched

Explore trajectory

Failed · Failure

A United States lunar orbiter attempt lost after a second-stage malfunction. Its solar paddles deployed, and the separated spacecraft fired its vernier engine before contact was lost.

Destinations
Launch vehicle
Atlas-Able
Launch site
Cape Canaveral, United States
Countries
United States
Mission types
Orbiter

Chronology

Mission timeline

  1. Launch

    Pioneer P-30 launched

    Earth
  2. Milestone

    Nose fairing released

    Earth
  3. Milestone

    Atlas sustainer cutoff

    Earth
  4. Milestone

    Second stage ignition

    Earth
  5. Milestone

    First and second stages separated

    Earth
  6. Milestone

    Second stage cutoff

    Earth
  7. Milestone

    Solar paddles deployed

    Earth
  8. Milestone

    Third stage spin-up

    Earth
  9. Milestone

    Second and third stages separated

    Earth
  10. Milestone

    Spacecraft separated from the third stage

    Earth
  11. Milestone

    Spacecraft vernier engine started

    Earth
  12. Milestone

    Spacecraft vernier engine stopped

    Earth

Mission architecture

Vehicles

  • Pioneer P-30 · Spacecraft

    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.
  • 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 September 14, 2026