Second orbit-raising of Chandrayaan-2 success

Scientists have successfully carried out the ‘crucial’ second orbit-raising maneuver on Chandrayaan-2.

Published: 27th July 2019 04:49 AM  |   Last Updated: 27th July 2019 04:49 AM   |  A+A-

Chandrayaan-2 made a successful lift off from the Satish Dhawan centre on July 22

Express News Service

CHENNAI: Scientists have successfully carried out the ‘crucial’ second orbit-raising maneuver on Chandrayaan-2.  Officials said the onboard propulsion system was fired for a duration of 883 seconds at 1.08 am on Friday to achieve higher orbit of 251 km perigee (point of orbit closest to the earth) and 54829 km apogee (point of orbit farthest to the earth). The first maneuver was carried out on Wednesday. 

ISRO said the third orbit-raising maneuver is scheduled on July 29 between 2.30 pm and 3.30 pm. The Trans Lunar Insertion (TLI) of Chandrayaan-2 is scheduled on August 14, which will send the spacecraft to Moon and beginning of crucial phase of the mission. The spacecraft will perform a series of TLI burns for raising its apogee successively, to reach the vicinity of the Moon orbit. 

As the Moon’s location is continuously changing due to orbital motion, the intersection of Chandrayaan-2 and the Moon’s path, has to be predicted sufficiently in advance with a high level of accuracy. As the Moon approaches the apogee of Chandrayaan-2, on-board thrusters fire precisely to reduce its velocity for lunar capture. The margin of error in these calculations and maneuvers is very narrow, officials said. 

Stay up to date on all the latest Nation news with The New Indian Express App. Download now
(Get the news that matters from New Indian Express on WhatsApp. Click this link and hit 'Click to Subscribe'. Follow the instructions after that.)


Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on are those of the comment writers alone. They do not represent the views or opinions of or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp