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.

Objectives:

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

Challenges:

• 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.

Background:

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

Source: Indian Express