The Indian Space Research Organization (ISRO) on Sunday said it has successfully completed the fifth and final lunar orbital maneuver for the Chandrayan-2 spacecraft and is preparing to separate the lander from orbit on Monday. All spacecraft parameters are normal, the space agency with the Bengaluru headquarters said after Sunday's maneuver on the spacecraft, which is currently in lunar orbit for its transmission with the moon.
"The last and fifth lunar orbit maneuvers for the Chandrayan-2 spacecraft were successfully completed today [September 1] beginning in 1821. IST as planned using the onboard propulsion system. The maneuver duration is 52 seconds. The achieved orbit is 119 km x 127 km, "ISRO said in an update. It says the next operation is the separation of the Vikram lander from the Chandrayaan-2 Orbiter, which is scheduled for September 2, 2019 between 12:45 pm and 1:45 pm (IST). Thereafter, there will be two deorbit maneuvers on Vikram land to prepare for their landing in the south polar region of the moon.
Vikram (with Pragyan rover located inside) is expected to reach the moon's surface on September 7, between 1:30 and 2:30. ISRO said that after the split of the lander on Monday, two deorbit maneuvers are scheduled for September 3 (9: 00-10: 00) and September 4 (3: 00-4: 00), respectively, before the power down on September 7.  ISRO Chairman K Sivan stated that the proposed soft landing on the moon would be a "terrifying" moment, as this is something that ISRO did not do before the lunar orbit maneuver (LOI) was successfully carried out on Chandrayan Time 1 mission. Highlighting India's second mission, the Chandrayan-2 spacecraft successfully entered the lunar orbit on August 20, performing the LOI maneuver.
The Chandrayan-2 satellite began its voyage to the moon, leaving Earth's orbit in the dark on August 14, after a crucial maneuver called Trans Lunar Insertion (TLI) by ISRO to place the spacecraft on the "Lunar Transfer Trajectory" .
The geosynchronous launch vehicle in India, GSLV MkIII-M1, successfully launched the 3,840 kg Chandrayan-2 spacecraft orbiting the Earth on July 22nd. The health of the spacecraft is constantly monitored by the ISRO Telemetry, Tracking and Command Complex Mission Operations Complex in Bengaluru, with the support of antennas on the Indian Deep Space Network in Bilalu, near Bengaluru, the space agency said.
After landing, the Pragyan rover will pop out of the Vikram lander between 5: 30-6: 30 on September 7, and perform experiments on the lunar surface for a period of one lunar day equal to 14 Earth days. . The life of the mission is also a lunar day, while the orbit will continue its mission for a year. The orbiter carries eight scientific payloads to map the lunar surface and study the exosphere (outer atmosphere) of the moon, while the lander carries three scientific payloads to conduct surface and underground scientific experiments.
The rover carries two payloads to improve the understanding of the lunar surface. India's second lunar expedition will shed light on a completely unexplored stretch of the moon, its southern polar region. ISRO stated that the goal of Chandrayan-2's mission is to develop and demonstrate key technologies for the end-to-end capabilities of the lunar mission, including soft landing and moonlighting. On the scientific front, the mission aims to further expand knowledge of the moon through a thorough study of its topography, mineralogy, surface chemical composition, thermophysical characteristics and atmosphere, leading to a better understanding of the moon's origin and evolution, the space agency said.