Launch was originally scheduled for June 16, but delayed two days after a careless lieutenant had the booster filled with the wrong grade of RP-1 propellant.
At T+153 seconds, the yaw gyro failed and the core stage began deviating from its flight trajectory.
The AVD system terminated thrust and the booster crashed 841 km (522 miles) downrange.
It would also have released gaseous sodium, in order to create a cloud of the metal which could be observed from Earth, allowing the spacecraft to be tracked.
[5] Prior to the release of information about its mission, NASA correctly identified that it had been an attempted lunar impact mission, however they incorrectly believed that it had been launched on 16 June, two days before its actual launch.