Targeted Proximity Operations It is also note worthy that this was the first targeted proximity operations mission Targeting algorithms onboard the Shuttle included Rendezvous code for coarse orbit adjustment as well as fine Coarse adjustments used targeting algorithms that employ Lambert equations The fine close in adjustments were made with newly tested at the time code using Clohessy Wilshire equations and using all available sensors in the aft cockpit These were extensively tested in both 3 DOF and 6 DOF simulators before proximity targeted maneuvers were approved by NASA