ISRO performs 4th lunar-bound orbit maneuver for Chandrayaan-2

Pablo Tucker
September 1, 2019

The next significant date for Chandrayaan-2 is on September 2 when Vikram lander will separate from the orbiter.

"Fourth lunar bound orbit maneuvre for Chandrayaan-2 spacecraft was performed successfully on August 30 at 1818 hrs IST", ISRO said in a tweet. Friday's manoeuvre started at 6.18 pm and went on for 20 minutes (1155 seconds) after which the lunar module was put in 124 km x 164 km orbit.

The spacecraft will be the first Indian expedition to attempt a soft landing on the lunar surface. According to the post, all parameters are normal and the next lunar-bound orbit maneuver is scheduled for September 1 before landing in the lunar South Pole on September 7. A series of complex braking manoeuvres would then be undertaken to bring it closest to the moon.

"ISRO has great pleasure in informing that you have been selected to watch the historical Chandrayaan-2 moon landing on the early hours of September 07, 2019 at the ISRO Tracking Centre (ISTRAC), Bengaluru, in the presence of Honourable Prime Minister of India Shri Narendra Modi Ji".

The mission life of the lander is also one lunar day, while the orbiter will continue its mission for a year. On July 22, the Rs 978 crore Chandrayaan-2 was launched into the space by India's heavy lift rocket Geosynchronous Satellite Launch Vehicle-Mark III (GSLV Mk III) in text book style. The 27-kg rover, which is loaded with two payloads and has images of Tricolour and Isro logo embossed on it, will roll out on the lunar surface at a speed of 1cm per second.

On the science front, this mission aims to further expand the knowledge about the moon through a detailed study of its topography, mineralogy, surface chemical composition, thermo-physical characteristics and atmosphere, leading to a better understanding of the origin and evolution of the moon, the space agency had said.

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