Published: Sun, September 01, 2019
Sci-tech | By Patricia Wade

ISRO performs 4rd lunar-bound orbit maneuver

ISRO performs 4rd lunar-bound orbit maneuver

The Indian Space Research Organization (ISRO) on Friday evening claimed to have successfully completed the fourth lunar-bound orbit change for the Chandrayaan-2 spacecraft.

Thomas said Sunday that when Chandrayaan-2 lands on the moon, the entire world, including the American Space Agency NASA, will be eyeing it. The next day, the actual orbit lowering manoeuvre will be done for 6.5 seconds to bring the lander-rover to a 100x35km orbit.

The spacecraft has reached into an orbit that is 119 km from the lunar surface at its nearest point, and 127 km at the farthest.

The final and fifth Lunar bound orbit maneuver for Chandrayaan-2 spacecraft was performed successfully today (September 01, 2019) at 1821 hrs IST. In a significant milestone for India's second Moon mission, the Chandrayaan-2 spacecraft had efficiently entered the lunar orbit on August 20 by performing Lunar Orbit Insertion (LOI) manoeuvre.

If successful, Vikram lander will then be put on a separate, circular path identical to the orbiter, passing over the lunar poles at a distance of roughly 100 km from the surface.

Following separation, Vikram will perform two deorbit maneuvers to prepare for its landing in the south polar region of the moon.

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The spacecraft entered the lunar orbit on Tuesday after the rough six weeks since liftoff, having attained the 100-km orbit with all the three components still intact and stuck together.

After that is when the Vikram lander will make its long-awaited powered descent and landing on the 7th of September in what ISRO describes as "15 minutes of terror".

Chandrayaan 2 was launched from Satish Dhawan space centre in Sriharikota in Andhra Pradesh by India's heavy-lift rocket Geosynchronous Satellite Launch Vehicle-Mark III (GSLV Mk III) on July 22.

It reads, "Chandrayaan 2 to mission control, 4 done, 1 to go!"

The mission life of the lander is also one lunar day, while the orbiter will continue its mission for a year.

He explained, "We have landed near the equator of the moon before but never at the South Pole".

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