BENGALURU: Operating independently for the first time since Chandrayaan-2 was launched on July 22, Vikram, the lander, underwent its first manoeuvre around Moon .Isro successfully completed the first de-orbiting manoeuvre at 8.50 am Tuesday, using for the first time, the propulsion systems on Vikram. All these days all operations were carried out by systems on the orbiter, from which Vikram, carrying Pragyan (rover) inside it, separated from on Monday."The duration of the maneuver was 4 seconds. The orbit of Vikram is 104kmX128 km, the Chandrayaan-2 orbiter continues to orbit Moon in the existing orbit and both the orbiter and lander are healthy," Isro said.The next de-orbiting maneuver is scheduled on September 04 between 3.30 am and 4.30 am.As reported by TOI, the landing module (Vikram and Pragyan) successfully separated from the orbiter at 1.15 pm Monday (September 2), pushing India's Chandrayaan-2 mission into the last and most crucial leg: Moon landing ."The operation was great in the sense that we were able to separate the lander and rover from the orbiter—It is the first time in the history of Isro that we've separated two modules in space. This was very critical and we did it very meticulously," Isro chairman K Sivan told TOI soon after the separation.Vikram is expected to touchdown on the lunar surface between 1.30 am and 2.30 am on September 7. Isro had announced that it would be at 1.55 am. "We are looking at starting the powered descent at 1.40 am or 1.45 am. The landing must happen 15 minutes after that," Sivan explained.Read this story in Benagli