NEW DELHI: India's Chandrayaan-3 mission, which made a soft landing near the moon's south pole, took off with a four-second delay to avoid hitting a piece of space debris, ISRO said in a recent report.
According to the Indian Situational Space Awareness Report (ISSAR) for 2023, the nominal lift-off of the launch vehicle Mark-3 carrying the Chandrayaan-spacecraft had to be delayed by four seconds based on Collision at Launch Avoidance (COLA) . Analysis.
The Indian Space Research Organization (ISRO) said the delay was necessary to avoid close approaches between the debris object and satellites injected into their orbital phase due to overlapping operational altitudes.
According to the European Space Agency, more than 60 years of space activities have resulted in approximately 56,450 objects being tracked in orbit, of which approximately 28,166 remain in space and are regularly tracked by the US Space Surveillance Network (USSSN). Go and are retained in yourself.Catalog.
The USSN catalog includes objects approximately 5–10 cm in Earth orbit (LEO) and larger objects ranging from 30 cm to 1 m in geostationary (GEO) altitude.
India's Chandrayaan-3 mission with lunar lander module Vikram and rover Pragya was launched on July 1 last year from ISRO's Satish Dhawan Space Center in Sriharikota.
On August 23, 2023, India created history by becoming the first country to safely land a spacecraft near the south pole region of the Moon. The experiments were conducted for one lunar day which is equal to 14 Earth days.
The four-second delay in the launch of Chandrayaan-3 ensured safe passage for the spacecraft on its journey to the Moon without the threat of collision.According to the ISSAR-2023 report, ISRO had to delay the launch of Singapore's DS-SAR satellite on PSLV-C56 mission by one minute on July 30 last year to avoid collision with space debris.
Similarly, the launch of another Singaporean satellite TeLEOS-2 on April 24 last year had to be delayed by one minute following COLA analysis.
According to the report, ISRO had to conduct 23 collision avoidance maneuvers (CAM) in 2023 to protect its satellites from damage caused by space debris. Of the 23 CAMs, 18 were intended for satellites in Earth orbit to avoid space debris, while five were intended for spacecraft in geostationary orbit.
The ISSAR-2023 report said ISRO received about 1,37,565 close approach alerts from the US Space Command, which were re-evaluated using more accurate orbit data from Indian operational satellites.A total of 3,033 alerts for close approaches within a distance of one k were detected for ISRO satellites.
Approximately 2,700 close approaches were observed with other operational satellites within five km of close approach distance.
However, the report stated that none of the close approaches were significant enough to warrant a CAM.
According to the Indian Situational Space Awareness Report (ISSAR) for 2023, the nominal lift-off of the launch vehicle Mark-3 carrying the Chandrayaan-spacecraft had to be delayed by four seconds based on Collision at Launch Avoidance (COLA) . Analysis.
The Indian Space Research Organization (ISRO) said the delay was necessary to avoid close approaches between the debris object and satellites injected into their orbital phase due to overlapping operational altitudes.
According to the European Space Agency, more than 60 years of space activities have resulted in approximately 56,450 objects being tracked in orbit, of which approximately 28,166 remain in space and are regularly tracked by the US Space Surveillance Network (USSSN). Go and are retained in yourself.Catalog.
The USSN catalog includes objects approximately 5–10 cm in Earth orbit (LEO) and larger objects ranging from 30 cm to 1 m in geostationary (GEO) altitude.
India's Chandrayaan-3 mission with lunar lander module Vikram and rover Pragya was launched on July 1 last year from ISRO's Satish Dhawan Space Center in Sriharikota.
On August 23, 2023, India created history by becoming the first country to safely land a spacecraft near the south pole region of the Moon. The experiments were conducted for one lunar day which is equal to 14 Earth days.
The four-second delay in the launch of Chandrayaan-3 ensured safe passage for the spacecraft on its journey to the Moon without the threat of collision.According to the ISSAR-2023 report, ISRO had to delay the launch of Singapore's DS-SAR satellite on PSLV-C56 mission by one minute on July 30 last year to avoid collision with space debris.
Similarly, the launch of another Singaporean satellite TeLEOS-2 on April 24 last year had to be delayed by one minute following COLA analysis.
According to the report, ISRO had to conduct 23 collision avoidance maneuvers (CAM) in 2023 to protect its satellites from damage caused by space debris. Of the 23 CAMs, 18 were intended for satellites in Earth orbit to avoid space debris, while five were intended for spacecraft in geostationary orbit.
The ISSAR-2023 report said ISRO received about 1,37,565 close approach alerts from the US Space Command, which were re-evaluated using more accurate orbit data from Indian operational satellites.A total of 3,033 alerts for close approaches within a distance of one k were detected for ISRO satellites.
Approximately 2,700 close approaches were observed with other operational satellites within five km of close approach distance.
However, the report stated that none of the close approaches were significant enough to warrant a CAM.
