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Chandrayan 2's planned orbit was "compressed" in the last maneuver, ISRO reveals. What does it mean? – Technology news, Firstpost



The second Indian moon exploration mission, Chandrayaan 2 ended the day in its new moon orbit. The Chandrayaan 2 Composite – the single orbital assembly composed of the orbit, the Vikram lander with a rotating rover – successfully performed one of the four orbital maneuvers around the moon to bring the spacecraft within 1

00 kilometers of the moon .

The Indian Space Research Organization (ISRO) has stated that the planned orbit for the spacecraft has been altered – compressed, to an elliptical orbit of 114 x 4.412 km ( nearest x farthest distance in orbit) from the moon. The original orbit at this stage was 121 X 4,303 km. Chandrayan 2 is already at 118 km altitude, a slight deviation of 3 km from the planned orbit.

  Chandrayan 2's planned orbit is compressed into the latest maneuver, ISRO reveals. What does it mean?

Moon capture and first orbit in the phase related to the Mission Moon. Image: ISRO

But there were slight deviations from the "planned orbit" a few steps along the way:

  • The second orbital maneuver had to place C2 at 250 x 54,689 km ( nearest x farthest distance) elliptical orbit around Earth, but instead placed C2 in orbit 251 X 54 829 km. [Off by 1 x 140 km]
  • The third orbital maneuver is intended to place a spacecraft at 268 x 71.558 km ( nearest x farthest distances), but place it at 276 x 71.792 km orbit instead. [Off by 8 x 234 km]
  • The fourth Earth-bound orbit was to put the spacecraft 248 x 90 229 km ( closest x farthest ), but it was placed at 277 x Instead, the orbit is 89 472 km. [Off by 29 x 757 km]
  • The final ascent of the orbit is to place C2 at 221 x 1.43,585 km ( nearest x farthest distance) an elliptical orbit, but it was placed at 276 x 1, Instead of 42,975 km orbit. [Off by 55 x 610 km]
  • When the C2 composite first entered orbit around the moon on August 20, it was intended to do so in an elliptical orbit measuring 118 x 18 078 km, but was instead placed in an orbit of 114 km x 18 072 km. [Off by 4 x 6 km]

If "all spacecraft parameters are normal," as the latest ISRO update announced we have little to worry about. The next update, which we will expect, scheduled for August 28th between 5.30am and 6.30am IST, aims to reduce the spacecraft's height to 178 x 1,411 km from its current elliptical orbit at 114 km x 18 072 km.

The moon-phase phase of the mission, which was 28 days in the earlier launch plan has been shrunk to 13 days in the current one. This is an important part of the mission of the orbit: a stay for the first time to inspect his annual home, ensure that no damage to his instruments has been made during the journey so far, and an in-depth exploration of the Vikram's landing spot [19659004] In the fourth and final orbital maneuver, scheduled for September 1, Chandrayan 2's composition in orbit-landing is expected to enter a circular orbit at a height of 100 km around the moon.

Find our full collection of stories, in-depth analysis, live updates, videos and more about Moon Mission Chandrayaan in our specialized domain # Chandrayaan2TheMoon.


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