ISRO's Aditya L1 Solar Mission Completes Third Earth-Bound Maneuver

ISRO's Aditya L1 solar mission is making significant progress on its journey to study the Sun, marking a milestone as it successfully completed its third earth-bound manoeuvre. The operation, conducted with precision from ISRO's ground stations in Mauritius, Bengaluru, SDSC-SHAR, and Port Blair, has positioned the satellite into a new orbit with parameters measuring 296 km x 71767 km.

This development sets the stage for the upcoming manoeuvre, EBN#4, scheduled for September 15, 2023, around 02:00 Hrs. IST.

Aditya-L1 Mission:
The third Earth-bound maneuvre (EBN#3) is performed successfully from ISTRAC, Bengaluru.

ISRO's ground stations at Mauritius, Bengaluru, SDSC-SHAR and Port Blair tracked the satellite during this operation.

The new orbit attained is 296 km x 71767 km.… pic.twitter.com/r9a8xwQ4My

— ISRO (@isro) September 9, 2023

Earth-bound manoeuvres are a crucial part of the mission, involving the firing of rockets and precise adjustments to the spacecraft's orientation. To grasp how this works, one can draw an analogy to the experience of swinging on a playground swing set. To make the swing go higher, one applies pressure (by shifting their body weight) at the right moment, usually when the swing is coming down towards the ground.

Similarly, in Aditya-L1's case, once it has gained sufficient velocity, it will execute a slingshot manoeuvre to align itself with its intended trajectory towards the Sun.

The central goal of the Aditya L1 mission is to reach the L1 point, which stands for Lagrange Point 1. This point in space is where the gravitational forces from celestial objects, namely the Earth and the Sun, interact in such a way that a spacecraft can be stably parked in what is known as a halo orbit—an oval-shaped path that shifts on three axes.

Upon reaching the L1 point, Aditya-L1 will carry out another critical manoeuvre to bind the spacecraft to its designated orbit. This unique orbit around the L1 point, which is roughly perpendicular to the line connecting the Earth and the Sun, will enable Aditya-L1 to continuously monitor the Sun.

One of the advantages of this strategic location is that it allows the satellite to access solar radiation and magnetic storms before they are influenced by Earth's magnetic field and atmosphere. This early detection capability is vital for understanding and predicting space weather phenomena, which can have significant impacts on Earth's technology and infrastructure.

Additionally, the gravitational stability at the L1 point reduces the need for frequent orbital maintenance, ensuring that Aditya-L1 can focus on its mission objectives effectively and efficiently.

In summary, Aditya L1's successful completion of its third earth-bound manoeuvre signifies a significant step towards its ultimate goal of reaching the L1 point and becoming an invaluable asset for solar research and space weather monitoring, which has far-reaching implications for our understanding of the Sun's influence on our planet.

Also Read: Aditya L1 Mission: Why will Aditya L1 be positioned at the L1 point in the Earth-sun system?

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