Chandrayaan-2 live updates: You've inspired us with your journey, Nasa tells Isro

Chandrayaan-2 is indigenous mission, milestone: Ex-ISRO scientist

Everything going according to plan, ISRO chief

Everything going according to plan, ISRO chief on proposed soft landing of 'Vikram' module

I urge you all to watch the special moments of Chandrayaan - 2 descending on to the Lunar South Pole! Do share your photos on social media. I will re-tweet some of them too: PM Modi

I have been regularly and enthusiastically tracking all updates relating to Chandrayaan - 2 since it was launched on 22nd July 2019

PM Modi on Twitter: The moment 130 crore Indians were enthusiastically waiting for is here!

Chandrayaan-2: What Pragyan will tell Vikram on the Moon

Mission Chandrayaan 2: Vikram, Orbiter extend good wishes to each other

'Vikram' with rover 'Pragyaan' housed inside is scheduled for a powered-descent between 1 am and 2 am on September 7, followed by its touchdown between 1.30 am and 2.30 am.

Vikram's final descent from the lunar orbit would've started from an altitude of 35km. As per Isro's plan, about 10 minutes after the descent is initiated, Vikram would have dropped to a height of 7.4km from the lunar surface. In the next 38 seconds, it will reach a height of 5km and another 89 seconds later Vikram's altitude will be 400m. Here, Vikram will hover for a few seconds to collect data before plunging to 100m in 66 seconds. Vikram's final descent from the lunar orbit would've started from an altitude of 35km. As per Isro's plan, about 10 minutes after the descent is initiated, Vikram would have dropped to a height of 7.4km from the lunar surface. In the next 38 seconds, it will reach a height of 5km and another 89 seconds later Vikram's altitude will be 400m. Here, Vikram will hover for a few seconds to collect data before plunging to 100m in 66 seconds. Vikram's final descent from the lunar orbit would've started from an altitude of 35km.

Isro considered that both the primary and backup site should have Sun's elevation at more than six degrees on the landing day to ensure enough illumination for the lunar craft to capture images. The lander has been taking pictures of the preferred landing sites since Tuesday.

At a height of 100m, Vikram will hover for a few seconds before the final descent. "Within each landing site, two zones are identified of size 500m x 500m, separated by 1.6km. The prime target will be the first zone," says an Isro paper.

Chandrayaan-2's preferred landing site is between two craters, Manzinus and Simpelius, about 350km north of Moon's south pole.

Isro had chosen a primary landing site and a secondary one, now Vikram will approach the primary landing site, which in turn has two landing zones. "Vikram will be selecting one of these landing zones at the primary site after analysing data at that moment," said an Isro scientist.

Forty-seven days after it left Earth, Chandrayaan-2 lander Vikram will decide on the exact landing spot on Moon when it would be 100m above the lunar surface between 1.30am and 2.30am on Saturday. If all goes well, it'll touch down 78 seconds later.