Launch Date Apr. 20, 1964
Launch Site Baikonur Cosmodrome, Kazakhstan, Russia |
Launch Site 1
Destination Earth’s Moon
Type Lander
Status Unsuccessful
Nation Soviet Union
Alternate Names


This was another Soviet attempt to safely land a probe carrying an imaging system and radiation detector on the Moon.


None. The spacecraft failed to reach Earth orbit when its engine shut down too soon.

Key Dates

Apr. 20, 1964: Launch

In Depth

This was the fifth Soviet attempt at a lunar soft-landing. The mission was aborted early when during the ascent to Earth orbit, the launch vehicle's third-stage engine prematurely
shut down.

A subsequent investigation indicated that the engine cut off due to loss of power when a circuit between a battery in the fourth stage (which powered the third-stage engine) and the I-100 guidance unit was broken.


Launch Vehicle: 8K78M (no. T15000-21)

Spacecraft Mass: c. 1,420 kg

Spacecraft Instruments:

  1. imaging system
  2. radiation detector

Selected References

Siddiqi, Asif A. Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958-2000, NASA, 2002.

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