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Mission record

Pioneer 6

Also known as Pioneer-A

NASA · Launched

Explore trajectory

Completed · Success

Pioneer 6 was the first of several NASA spacecraft designed for launch at six-month intervals to study interplanetary phenomena in space in heliocentric orbits similar to that of Earth. These spacecraft successfully provided simultaneous scientific measurements at widely dispersed locations in heliocentric orbit.

Destinations
Launch vehicle
Delta-35
Launch site
Cape Canaveral, Launch Complex 17A
Countries
United States
Mission types
Heliophysics

Chronology

Mission timeline

  1. Launch

    Pioneer 6 launched

    Earth
  2. Milestone

    Formal mission completed

    Contact was later re-established using the backup transmitter; this is not a physical spacecraft end.

    Sun
  3. Milestone

    Backup transmitter contact

    Contact supported Lunar Prospector training.

    Sun
  4. Loss of contact

    Final anniversary contact

    Two hours of successful contact; no later measured position or attitude is inferred.

    Sun

Mission architecture

Vehicles

  • Pioneer 6 · Spacecraft

    Destinations: Sun

Trajectory record

Time-dependent navigation trajectory

Source states place the model at the selected time. Reconstructed flight, estimates, predictions and historical mission plans are identified by interval; gaps remain visible.

Source records and sampling assumptions are retained with the repository data. Model attitude and surface appearance are illustrative.

  • Pioneer 6: Estimated · January 1, 1996 to December 28, 1999
  • Pioneer 6: COHOWeb HGI positions fitted to a heliocentric conic · 1965-12-16 to 1971-05-08 · December 16, 1965 to May 8, 1971

Provenance

Sources

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

Data verified through October 12, 2026