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Mission record

Ranger 3

Also known as 1962 Alpha 1, Ranger3

NASA · Launched

Explore trajectory

Failed · Failure

Ranger 3 was the first of the Block II Ranger designs, built to televise the lunar surface during descent and rough-land a seismometer capsule on the Moon. A series of malfunctions beginning with a booster guidance error left it on the wrong trajectory, and it missed the Moon by approximately 36,800 km and entered a heliocentric orbit.

Destinations
Launch vehicle
Atlas-Agena B
Launch site
Cape Canaveral, United States
Countries
United States
Mission types
Impactor, Lander

Chronology

Mission timeline

  1. Launch

    Ranger 3 launched

    Earth
  2. Flyby

    Ranger 3 missed the Moon by approximately 36,800 km

    Moon

Mission architecture

Vehicles

  • Ranger 3 · Spacecraft

    Destinations: Moon

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.

  • Ranger 3: Postmidcourse lunar approach · January 27, 1962 to January 28, 1962

Provenance

Sources

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

Data verified through October 6, 2026