Editing Surveyor 2 (section)

==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&nbsp;km from its aim point. During the midcourse correction maneuver one [[vernier thruster]] failed to ignite, resulting in 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 (lunar crater)|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&nbsp;lb (292&nbsp;kg), and speed was about 6000 miles an hour (2.6&nbsp;km/s = 5840&nbsp;mph), slightly over lunar escape velocity (2.4&nbsp;km/s) and similar to the impact velocities of the [[Ranger program]] spacecraft.<ref>{{cite web |url=http://www.boeing.com/defense-space/space/bss/factsheets/scientific/surveyor/surveyor.html |title=Boeing: Satellite Development Center - Scientific Exploration - Surveyor |access-date=2010-03-31 |url-status=dead |archive-url=https://web.archive.org/web/20100207072958/http://boeing.com/defense-space/space/bss/factsheets/scientific/surveyor/surveyor.html |archive-date=2010-02-07 }}</ref>