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      Aditya L1 Successfully Completed Second Earth-Bound Manoeuvre, Next One Scheduled for 10th September 2023 : ISRO

      The first space-based Indian mission to study the Sun, Aditya L1 underwent the second earth-bound manoeuvre successfully, ISRO said. ISRO’s Telemetry, Tracking and Command Network (ISTRAC) carried out the operation.

      The next manoeuvre (EBN#3) is schedule for 10th September, 2023, around 02:30 Hrs. IST, ISRO said.

      Aditya-L1 is the first Indian space-based observatory to study the Sun from a halo orbit around the first Sun-earth Lagrangian point (L1), which is locate roughly 1.5 million km from Earth.

      The first earth-bound manoeuvre was successfully perform on 3rd September 2023.

      The spacecraft will undergo two more earth-bound orbital manoeuvres before being place in the transfer orbit towards the Lagrange point L1.

      Aditya-L1 is expect to arrive at the intend orbit at the L1 point after about 127 days.

      ISRO’s Polar Satellite Launch Vehicle (PSLV-C57) on 2nd September 2023 had successfully launch the Aditya-L1 spacecraft, from the Second Launch Pad of Satish Dhawan Space Centre (SDSC), Sriharikota.

      After a flight duration of 63 minutes and 20 seconds, the Aditya-L1 spacecraft was successfully inject into an elliptical orbit of 235×19500 km around the Earth.

      According to ISRO, a satellite place in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses.

      This will provide a greater advantage in observing solar activities and their effect on space weather in real time.

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      Aditya-L1 carries 7 scientific payloads indigenously develop by ISRO and national research laboratories including the Indian Institute of Astrophysics (IIA), Bengaluru, and Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune.

      The payloads are to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic particle and magnetic field detectors.

      Using the special vantage point L1, four payloads directly view the Sun and the remaining three payloads carry out in-situ studies of particles and fields at the Lagrange point L1, and providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium.

      The suits of Aditya L1 payloads are expect to provide the most crucial information to understand the problem of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, and propagation of particles and fields.

      As per the scientists, there are five Lagrangian points (or parking areas) between the Earth and the Sun where a small object tends to stay if put there.

      The Lagrange Points are name after Italian-French mathematician Joseph-Louis Lagrange for his prize-winning paper, “Essai sur le Problème des Trois Corps, 1772.

      These points in space can be use by spacecraft to remain there with reduce fuel consumption.

      At a Lagrange point, the gravitational pull of the two large bodies, Sun and Earth equals the necessary centripetal force required for a small object to move with them. 

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