Skip to content

ISRO’s Aditya-L1 lifts off to study the sun

The Indian Space Research Organization (ISRO) launched Aditya-L1, India's first solar observatory mission, on September 2.

At 11.50 a.m., the Polar Satellite Launch Vehicle (PSLV), in its 59th launch with the Aditya-L1 aboard, lifted off from Sriharikota's Satish Dhawan Space Center.

The PSLV launched the Aditya-L1 spacecraft at 12.53 p.m., placing it in a very eccentric orbit around the Earth, about 63 minutes after liftoff. The workhorse launch vehicle used by ISRO has one of its longest flights in recent memory.


The Aditya-L1 mission will be the 25th PSLV-XL type flight.
Aditya-L1 will remain in orbit above the planet for 16 days after launch, during which time it will perform five maneuvers to achieve the necessary velocity for its lengthy ascent towards the sun.

Aditya-L1 will next carry out a Trans-Lagrangian1 insertion maneuver, which will launch its 110-day trajectory to the location around the L1 Lagrange point. Once reached the L1 point, another maneuver locks Aditya-L1 into an orbit around L1, which is the location of balanced gravitational pull between the sun and the earth.

To get to L1, the spacecraft will maneuver in orbit using its Liquid Apogee Motor (LAM) engine.

Aditya-L1 will maintain a distance of 1.5 million kilometers (1%) of the distance between the earth and the sun from the planet.

Aditya-L1 has a five-year mission life, during which time its payloads should deliver the most important data to comprehend the issue of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, and propagation of particles and fields.


At the Goddess Chengalamma temple in Andhra Pradesh, the ISRO Chairman offers prayers for the Aditya L1 mission's success.
7 payloads
The seven payloads onboard Aditya-L1 are: Visible Emission Line Coronagraph (VELC); Solar Ultraviolet Imaging Telescope (SUIT); Solar Low Energy X-ray Spectrometer (SoLEXS); High Energy L1 Orbiting X-ray Spectrometer (HEL1OS); Aditya Solar wind Particle Experiment (ASPEX); Plasma Analyser Package For Aditya (PAPA); and Advanced Tri-axial High Resolution Digital Magnetometers.

Aditya-L1's solar panels have been deployed, and the spacecraft is now producing electricity.

"The Aditya-L1 spacecraft has been injected in an elliptical orbit of 235 km by 19,500 km, which is as intended, very precisely by the PSLV," stated ISRO Chairperson S. Somanath following the launch. With the upper stage of the PSLV requiring two burn sequences to inject the primary satellite for the first time, this mission style is quite unusual. The Aditya-L1 will set out on its journey right away. It will begin its trek toward the L-1 point after a few maneuvers. A about 125-day voyage, it is incredibly long.

Its orbit will be raised for the first time on September 3 at approximately 11.45 a.m.

After Chandrayaan-3's success, India resumes its spaceflight. ISRo's scientists and engineers deserve praise for the successful launch of Aditya-L1, India's maiden solar mission. After the successful launch, Prime Minister Narendra Modi posted on X (previously Twitter) that "our tireless scientific efforts will continue to develop better understanding of the Universe for the welfare of entire humanity."

Jitendra Singh, the Union Minister of State for Science and Technology (independent charge), congratulated ISRO and stated, "Congratulations India, congratulations ISRO... and like the whole world watched this with bated breath, it is indeed a sun shine moment for India."

The Visible Emission Line Coronagraph (VELC) satellite's seven payloads are called Aditya-L1.
SUIT, short for Solar Ultraviolet Imaging Telescope
SoLEXS, or Solar Low Energy X-ray Spectrometer
HEL1OS, or High Energy L1 Orbiting X-ray Spectrometer
ASTEX, the Aditya Solar Wind Particle Experiment
PAPA, or Plasma Analyzer Package for Aditya
High-resolution digital magnetometers with triaxial technology.


Daniel Jack

For Daniel, journalism is a way of life. He lives and breathes art and anything even remotely related to it. Politics, Cinema, books, music, fashion are a part of his lifestyle.