Chandrayaan-3 successfully inserted into lunar orbit, says ISRO
Bengaluru, Aug 5: India's ambitious third Moon mission's 'Chandrayaan-3' spacecraft was successfully inserted into the lunar orbit on Saturday, ISRO said.
The required manoeuvre was done from an ISRO facility here, the city-headquartered national space agency said in a tweet.
"Chandrayaan-3 has been successfully inserted into the lunar orbit. A retro-burning at the Perilune was commanded from the Mission Operations Complex (MOX), ISTRAC (ISRO Telemetry, Tracking and Command Network), Bengaluru," the space agency said in a tweet.
Perilune is the spacecraft's closest point to the moon.
The next operation -- reduction of orbit -- will be done at 11 pm on Sunday, ISRO added.
The space agency also shared a message from the satellite to its centres, which read, "MOX, ISTRAC, this is Chandrayaan-3. I am feeling lunar gravity."
According to ISRO sources, there will be four more Moon-bound manoeuvres to bring the satellite closer to the Moon, which is a 100 kilometre circular orbit.
After the manoeuvre on Sunday, there will be three more till August 17, following which the landing module, comprising the lander and rover will break away from the propulsion module. After this, de-orbiting manoeuvres will be carried on the lander before the final descent on moon. According to ISRO, it would attempt soft landing on the Moon's surface on August 23.
Over five moves in the three weeks since the launch on July 14, ISRO has been lifting the Chandrayaan-3 spacecraft into orbits farther and farther away from the Earth.
Then, on August 1 in a key manoeuvre -- a slingshot move -- the spacecraft was sent successfully towards the Moon from Earth's orbit.
Following this trans-lunar injection, the Chandrayaan-3 spacecraft escaped from orbiting the Earth and began following a path that would take it to the vicinity of the moon.
Chandrayaan-3 is a follow-on mission to Chandrayaan-2 to demonstrate end-to-end capability in safe landing and roving on the lunar surface. It consists of lander and rover configuration.
It comprises an indigenous propulsion module, lander module, and a rover with an objective of developing and demonstrating new technologies required for inter-planetary missions.
The propulsion module will carry the lander and rover configuration till 100 km lunar orbit. The propulsion module has Spectro-polarimetry of Habitable Planet Earth (SHAPE) payload to study the spectral and polarimetric measurements of earth from the lunar orbit.
The mission objectives of Chandrayaan-3 are to demonstrate safe and soft landing on the lunar surface, to demonstrate rover roving on the Moon, and to conduct in-situ scientific experiments.
The lander will have the capability to soft land at a specified lunar site and deploy the rover that will carry out in-situ chemical analysis of the Moon's surface during the course of its mobility.
The lander and the rover have scientific payloads to carry out experiments on the lunar surface.
Chandrayaan-3 Mission:
— ISRO (@isro) August 5, 2023
“MOX, ISTRAC, this is Chandrayaan-3. I am feeling lunar gravity 🌖”
🙂
Chandrayaan-3 has been successfully inserted into the lunar orbit.
A retro-burning at the Perilune was commanded from the Mission Operations Complex (MOX), ISTRAC, Bengaluru.
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AQI 'poor', 'very poor' in several parts of Haryana, Punjab
Chandigarh (PTI): The AQI in several places in Haryana and some in neighbouring Punjab was recorded in the 'poor' and 'very poor' categories on Friday, the morning after Diwali.
The Air Quality Index (AQI) in the Union Territory of Chandigarh was also in the 'very poor' category.
At 9 am on Friday, the AQI was recorded at 344 in Haryana's Gurugram, 340 in Jind, 308 in Ambala and 304 in Kurukshetra, according to the Sameer app that provides hourly updates of the national AQI published by the Central Pollution Control Board (CPCB).
An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', 401 and 450 'severe' and above 450 'severe plus'.
Among other places in Haryana, the AQI was recorded at 289 in Bahadurgarh, 224 in Ballabhgarh, 288 in Bhiwani, 228 in Charkhi Dadri, 236 in Faridabad, 248 in Fatehabad, 252 in Hisar, 232 in Karnal, 251 in Panchkula, 272 in Rohtak, 259 in Sonipat, 217 in Sirsa and 265 in Yamunanagar.
Chandigarh's AQI was recorded at 303.
In Punjab, Amritsar's AQI was also in the 'very poor' category with a reading of 314.
The AQI in Mandi Gobindgarh was at 331, Khanna at 308, Jalandhar at 253, Ludhiana at 214 and Patiala at 260.
The authorities had granted permission to burn only green crackers for a restricted period on Diwali.
In Chandigarh, the twin capital of Punjab and Haryana, green crackers were allowed between 8 pm and 10 pm. However, in many parts of the city, people continued to burst crackers well past the 10 pm limit.
The Punjab government had recently said only green crackers would be allowed during Diwali, Gurpurab, Christmas and New Year's Eve.
Only green crackers, which are free from barium salts or compounds of antimony, lithium, mercury, arsenic, lead or strontium chromate, are permitted for sale and use in Punjab, an official statement had said earlier.
