ISRO officials are confident that the MIP would withstand the impact once it hits the lunar surface. "Most probably it will not disintegrate," an ISRO official said.

From the operational circular orbit of about 100 km height passing over the polar regions of the moon, it is intended to conduct chemical, mineralogical and photo geological mapping of the moon with Chandrayaan-1's 11 scientific instruments (payloads).

Two of those 11 payloads - Terrain Mapping Camera (TMC) and Radiation Dose Monitor (RADOM) - have already been successfully switched on. TMC has successfully taken the pictures of Earth and the moon.

After the release of MIP tomorrow, the other scientific instruments would be turned on sequentially leading to the normal phase of the two-year mission.