Chandrayaan-2 timeline: From launch to loss of contact with Vikram landerhttps://indianexpress.com/article/technology/science/chandrayaan-2-india-moon-mission-isro-timeline-5973760/

Chandrayaan-2 timeline: From launch to loss of contact with Vikram lander

Chandrayaan-2, riding the powerful GSLV Mk-III rocket, was successfully launched at 2.43 pm on July 22 from the Satish Dhawan Space Centre at Sriharikota.

chandrayaan 2, chandrayaan 2 moon landing, india mooon mission, india moon mission timeline, chandrayaan 2 landing, chandrayaan 2 landing date and time, chandrayaan 2 moon landing, chandrayaan 2 moon landing date and time, chandrayaan 2 land on moon, india moon mission news.
The Vikram lander of the Chandrayaan-2 failed to make a smooth soft-landing. (File)

Chandrayaan-2 timeline: The Vikram lander of the Chandrayaan-2 failed to make a smooth soft-landing, unable to bring down its speed to the required level. The mission operations complex at the ISRO Telemetry, Tracking and Command Network in Bengaluru stopped receiving data from the lander.

“The descent of Vikram was going on as per plan, and normal performance was observed up to an altitude of at 2.1 km. Subsequently, communication from the lander to the ground station was lost. Data being analysed,” ISRO chairman K Sivan said. Follow Chandrayaan-2 LIVE updates

Here is a timeline of Chandrayaan-2’s journey:

July 15

Just under an hour before liftoff, the Chandrayaan-2 mission was aborted at 02.51 hours after a technical snag was detected in the GSLV-MkIII rocket. The countdown to the launch was stopped at 56 minutes ahead of the scheduled time after scientists detected a problem in the rocket.

Explained | Chandrayaan-2 was to be launched by India and Russia in 2011; it’s delayed but better

Advertising

In a statement, a senior ISRO official said, “A technical snag was observed in launch vehicle system at one hour before the launch. As a measure of abundant precaution Chandrayaan-2 launch has been called off for today. The revised launch date will be announced later.”

* July 22

This time the Chandrayaan-2 launch went off without any hitch, a week after it was aborted 56 minutes before liftoff due to a technical snag. The textbook launch became successful as the spacecraft crossed Earth’s escape velocity in 16 minutes 23 seconds. It had been deposited in an earth orbit by the 640-tonne GSLV Mk-III which, after burning its successive stages, separated itself completely from the spacecraft.

chandrayaan 2, chandrayaan 2 moon landing, india mooon mission, india moon mission timeline, chandrayaan 2 landing, chandrayaan 2 landing date and time, chandrayaan 2 moon landing, chandrayaan 2 moon landing date and time, chandrayaan 2 land on moon, india moon mission news.
Sriharikota: ISRO successfully launches GSLV-MkIII-M1 rocket carrying Chandrayaan-2 from Satish Dhawan Space Centre, at Sriharikota in Nellore district of Andhra Pradesh, Monday, July 22, 2019. (PTI)

* July 24

Chandrayaan-2 performed its first earth-bound orbit manoeuvre at 14.52 hours.

* July 26

Chandrayaan-2 performed its second earth-bound manoeuvre.

Photos | ISRO releases photos of Moon craters clicked by Chandrayaan-2

* July 29

Chandrayaan-2 performed its third earth-bound manoeuvre.

chandrayaan 2, chandrayaan 2 moon landing, india mooon mission, india moon mission timeline, chandrayaan 2 landing, chandrayaan 2 landing date and time, chandrayaan 2 moon landing, chandrayaan 2 moon landing date and time, chandrayaan 2 land on moon, india moon mission news.
Bengaluru: ISRO Chairman K Sivan displays a model of Chanrayaan 2 orbiter and rover during a press conference in Bengaluru, Tuesday, Aug. 20, 2019. (PTI Photo) (PTI8_20_2019_000096B)

* August 2

Chandrayaan-2 performed its fourth earth-bound manoeuvre.

* August 6

Chandrayaan-2 performed its fifth earth-bound manoeuvre.

* August 20

Chandrayaan-2 successfully completed the Lunar Orbit Insertion (LOI) manoeuvre. The orbit achieved was 114 km x 18072 km. The spacecraft has been injected into an elliptical orbit that is 114 km away from the moon’s surface at its nearest point and 18,072 km at its farthest.

chandrayaan 2, chandrayaan 2 moon landing, india mooon mission, india moon mission timeline, chandrayaan 2 landing, chandrayaan 2 landing date and time, chandrayaan 2 moon landing, chandrayaan 2 moon landing date and time, chandrayaan 2 land on moon, india moon mission news.
Images of Lunar Surface captured by Terrain Mapping Camera -2 (TMC-2) of Chandrayaan 2. (ISRO)

* August 21

Chandrayaan-2 successfully completed the second Lunar Orbit Maneuver. Chandrayaan-2 moved into an elliptical orbit that, at its nearest point from the Moon, was 118 km from the lunar surface, and 4,412 km at its farthest.

* August 28

Chandrayaan-2 successfully completed the third Lunar Orbit Maneuver.

ExplainedChandrayaan-2 and the quest for water on moon

* August 30

Chandrayaan-2 successfully completed the fourth Lunar Orbit Maneuver. The spacecraft has reached into an orbit that is 124 km from the lunar surface at its nearest point, and 164 km at the farthest.

* September 1

Chandrayaan-2 successfully completed fifth and final Lunar Orbit Maneuver. The spacecraft reached into an orbit 119 km from the lunar surface at its nearest point, and 127 km at the farthest.

chandrayaan 2, chandrayaan 2 moon landing, india mooon mission, india moon mission timeline, chandrayaan 2 landing, chandrayaan 2 landing date and time, chandrayaan 2 moon landing, chandrayaan 2 moon landing date and time, chandrayaan 2 land on moon, india moon mission news.
Other Moon missions. (Source: ISRO)

* September 2

Vikram, the lander module of Chandrayaan-2, detached itself from the main spacecraft and started orbiting the moon independently, preparing itself for the descent to the lunar surface.

* September 3

The Vikram lander of the Chandrayaan-2 mission moved away from the main spacecraft and closer to the Moon, lowering itself into an orbit that was 104 km from the lunar surface at the nearest point and 128 km at the furthest.

* September 4

The Vikram Lander of the Chandrayaan-2 mission successfully carried out the second de-orbiting manoeuvre. “With this manoeuvre, the required orbit for the Vikram Lander to commence its descent towards the surface of the Moon is achieved,” ISRO said in a statement.

Advertising

* September 7

Chandrayaan 2’s Moon lander ‘Vikram’ with rover ‘Pragyaan’ touched down on the South Polar region of the Moon at 2.30 am. The crucial landing of ‘Vikram’ was carried out by at least eight onboard equipment in a coordinated manner.