ISRO’s Aditya-L1 Completes First Halo Orbit around Sun-Earth L1 Point in 178 Days

India’s first solar mission Aditya-L1 spacecraft completed its first halo orbit around the Sun-Earth L1 point on Tuesday, the Indian Space Research Organisation (ISRO) said in a statement. The Aditya-L1 mission is an Indian solar observatory at Lagrangian point L1, launched on September 2 last year and was inserted in its targeted halo orbit on January 6.

Aditya-L1 spacecraft in the Halo orbit takes 178 days to complete a revolution around the L1 point. During its travel in the halo orbit, the spacecraft will be subjected to various perturbing forces that will cause it to depart from the targeted orbit, the ISRO stated.

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Further, it underwent two station-keeping maneuvers on February 22 and June 7, respectively, to maintain this orbit. Today’s third station-keeping maneuver has ensured that its travel continued into the second halo orbit path around L1.

“This journey of Aditya L1 around Sun-Earth L1 Lagrangian point involves modeling of complex dynamics,” it said. The understanding of various perturbing forces acting on the spacecraft helped in determining the trajectory accurately and planning precise orbit manoeuvres.

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