The Indian Space Research Organisation (ISRO) is all set to embark on its most complex mission ever undertaken as the space agency is gearing to launch Chandrayaan-2 between July 9 and 16.

The landing on the moon is expected to be on September 6, ISRO chairman K Sivan said. "It is going to land at a particular location where nobody has gone before," he added.

Sivan said following the successful launch of the radar imaging earth observation satellite, RISAT-2B, on-board PSLV-C46 Wednesday, the next one- Chandrayaan-2 -is going to be a landmark mission for India.

"It is going to be the most complex mission ever undertaken by ISRO. It is going to take place between July 9 and 16, this year", he said, addressing scientists from the Mission Control Centre. The agency would look at the landing (rover) on the surface of the Moon on September 6, he said.

According to ISRO, Chandrayaan-2 is the second lunar mission and has three modules Orbiter, Lander (Vikram) and Rover (Pragyan). The Orbiter and Lander modules would be interfaced mechanically and stacked together as an integrated module and accommodated inside the launch vehicle -- GSLV-MkIII.

After launching into earthbound orbit, the integrated module will reach Moon orbit using Orbiter propulsion module. The Lander would separate from the Orbiter and soft land at the pre-determined site close to the lunar South Pole. The Rover would roll out for carrying out scientific experiments on the lunar surface.

Chandrayaan-2 would have 13 payloads and one passive experiment from American space agency NASA. ISRO had said earlier that eight payloads on Orbiter, three on lander and two on Rover and one passive experiment from NASA would be carried on Chandrayaan-2.

Chandrayaan 2 is an advanced version of the previous Chandrayaan 1 mission successfully launched about 10 years ago. Chandrayaan 1 had 11 payloads -- five from India, three from Europe, two from the USA, 1 from Bulgaria and the mission was credited with the discovery of water on the lunar surface. The 1.4-tonne spacecraft was launched using PSLV and the orbiter had orbited 100 km from the lunar surface.