Failure
The target area proposed was within Sinus Medii. The Atlas-Centaur had placed Surveyor 2 on a path to the moon that was only 130 km from its aim point. During the midcourse correction maneuver, one vernier engine failed to ignite, resulting in an unbalanced thrust that caused the spacecraft to tumble for its remaining 54 hours. Attempts to salvage the mission failed. Contact was lost with the spacecraft at 9:35 UTC, September 22. The spacecraft was targeted at Sinus Medii, but crashed near Copernicus crater. The spacecraft was calculated to have impacted the lunar surface at 03:18 UTC, September 23, 1966. Its weight on impact was 644 lb (292 kg), and speed was about 6000 miles an hour (2.6 km/s = 5840 mph), slightly over lunar escape velocity (2.4 km/s) and similar to the impact velocities of the Ranger program spacecraft.
Read more about this topic: Surveyor 2
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