SUCCESSFUL LAUNCH OF PSLV-C57 WITH ADITYA-L1 SPACECRAFT, See Videos of Flying ADITYA : देखिये वीडियो

-uttarakhandhimalaya.in-

SRIHARIKOTA, 2 SEPTEMBER. Today, on September 02, 2023, at 11.50 hrs, the Polar Satellite Launch Vehicle (PSLV-C57) successfully launched the Aditya-L1 spacecraft, from the Second Launch Pad of Satish Dhawan Space Centre (SDSC), Sriharikota.

Aditya-L1 is a satellite dedicated to the comprehensive study of the Sun. It has 7 distinct payloads developed, all developed indigenously. Five by ISRO and two by Indian academic institutes in collaboration with ISRO.

Aditya in Sanskrit means the Sun. L1 here refers to Lagrange Point 1 of the Sun-Earth system. For common understanding, L1 is a location in space where the gravitational forces of two celestial bodies, such as the Sun and Earth, are in equilibrium. This allows an object placed there to remain relatively stable with respect to both celestial bodies.

 

Aditya-L1 stays in Earth-bound orbits for 16 days, during which it undergoes 5 maneuvres to gain the necessary velocity for its journey. Subsequently, Aditya-L1 undergoes a Trans-Lagrangian1 insertion maneuvre, marking the beginning of its 110-day trajectory to the destination around the L1 Lagrange point. Upon arrival at the L1 point, another maneuver binds Aditya-L1 to an orbit around L1, a balanced gravitational location between the Earth and the Sun. The satellite spends its whole mission life orbiting around L1 in an irregularly shaped orbit in a plane roughly perpendicular to the line joining the Earth and the Sun.

The strategic placement at the L1 Lagrange point ensures that Aditya-L1 can maintain a constant, uninterrupted view of the Sun. This location also allows the satellite to access solar radiation and magnetic storms before they are influenced by Earth’s magnetic field and atmosphere. Additionally, the L1 point’s gravitational stability minimizes the need for frequent orbital maintenance efforts, optimizing the satellite’s operational efficiency.

• After a flight duration of 63 minutes and 20 seconds, the Aditya-L1 spacecraft was successfully injected into an elliptical orbit of 235×19500 km around the Earth.
• 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 located roughly 1.5 million km from Earth.
• Aditya-L1 spacecraft will undergo four earth-bound orbital maneuvers before being placed in the transfer orbit towards the Lagrange point L1. Aditya-L1 is expected to arrive at the intended orbit at the L1 point after about 127 days.
• Aditya-L1 carries seven scientific payloads indigenously developed by ISRO and national research laboratories including the Indian Institute of Astrophysics (IIA), Bengaluru and Inter-University Centre for Astronomy & Astrophysics (IUCAA), Pune.