New Delhi: The countdown for Monday’s Chandrayaan-2 mission launch began at 6:43 PM on Sunday. The GSLV-Mk III is expected to be airborne at 2:43 PM on Monday. Also Read - Space Tech-startup to Send India’s First Homegrown Earth-imaging Satellite on ISRO Rocket

The Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mk III) rocket with Chandrayaan-2 spacecraft was originally scheduled for flight at 2.51 AM on July 15. However, the flight was postponed after a technical snag was detected an hour prior to the rocket lift-off. Also Read - Attack Was Work Of Sophisticated Espionage Agency, Not of Street Thug: ISRO's Tapan Misra

Speaking to the media earlier on Sunday, ISRO chairman K Sivan said, “All preparatory work for Chandrayaan-2 launch completed. Technical snags that developed in the first attempt have been rectified. Today evening, the countdown for the launch will begin. Chandrayaan-2 will perform 15 crucial manoeuvres in days to come.” Also Read - 'I Was Poisoned', Senior ISRO Scientist Tapan Misra Claims in Facebook Post

ISRO has rectified the fault in its 44-metre Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mk III). Weighing about 640-tonne, the GSLV-Mk III rocket is nicknamed ‘Bahubali’ after the hero of a successful film of the same name.

Just like the protagonist of the film lifted a heavy Lingam in one of its scenes, the rocket will carry the 3.8-tonne Chandrayaan-2 spacecraft.

About 16-minutes into its flight, the Rs 375-crore GSLV-Mk III rocket is expected to sling the Rs 603-crore Chandrayaan-2 into its 170×40400-km orbit.

ISRO has sent up three GSLV-Mk III rockets so far. The first carried Crew Module Atmospheric Re-entry Experiment in December 2014. The second and third GSLV-Mk III carried communication satellites GSAT-19 and GSAT-29 in February 2017 and November 2018 respectively.

GSLV-Mk III will also be used for India’s manned space mission in 2022.

With IANS inputs