Aditya L1, ISRO’s mission to study the Sun, is set to be placed in final orbit Tomorrow

Syllabus: GS-III

Subject: Science & Technology

Topic: Achievements of Indians in science & technology

Issue: Aditya L1 Mission.

Context: The Aditya-l1 space probe executing its final manoeuvre on January 6 to enter a halo orbit around Sun-Earth Lagrange Point 1 (L1) 1.5 million km away, which was Launched on September2.
Top of FormSynopsis:

  • Aditya-L1 is ISRO’s first space-based observatory to examine the Sun.
  • Aims for a five-year mission to study the Sun and solar storms from L1’s unobstructed view.
  • Equipped with seven instruments, it will provide crucial data on solar dynamics.
  • L1 is an ‘unstable’ Lagrange point, requiring periodic makeovers to counter trajectory errors and maintain the intended orbit.
  • Aditya-L1 joins four active probes at L1, including NASA’s WIND, ACE, DSCOVR, and ESA’s SOHO, enhancing solar observation capabilities.
  • ISRO relies on precise “orbit determination” procedures using mathematical algorithms and specialized software for accurate positioning.


  1. Studying solar upper atmospheric dynamics,
  2. Coronal heating,
  3. Plasma physics, and
  4. Space weather drivers.


  • Maintaining stability at Lagrange Point 1, requiring precise maneuvers.
  • Continuous Adjustments are essential to counteract gravitational influences and ensure the correct orbit.Accurate “orbit determination” using algorithms and specialized software is vital for mission success.
  • External gravitational forces from celestial bodies add complexity to maintaining the spacecraft’s designated orbit.



Conclusion: The success of this mission underscores ISRO’s capabilities in tackling complex space missions and advancing our understanding of the Sun.

Scroll to Top