Aditya-L1: ISRO’s solar mission set to launch today from Sriharikota after Chandrayaan-3 success. Key highlights

ISRO to launch Aditya-L1 solar mission, which will explore the Sun from a halo orbit around Lagrange Point 1 (L1).

Edited By Fareha Naaz
Published2 Sep 2023, 07:58 AM IST
Sriharikota, Aug 30 (ANI): The rehearsal for the launch of the PSLV-C57/Aditya-L1 Mission, the first space-based Indian observatory to study the sun, is completed, in Sriharikota on Wednesday. The Aditya-L1 mission is to be launched on September 2 at 11:50 a.m. from Sriharikota. (ANI Photo)
Sriharikota, Aug 30 (ANI): The rehearsal for the launch of the PSLV-C57/Aditya-L1 Mission, the first space-based Indian observatory to study the sun, is completed, in Sriharikota on Wednesday. The Aditya-L1 mission is to be launched on September 2 at 11:50 a.m. from Sriharikota. (ANI Photo)(ISRO Twitter)

Aditya-L1 mission: The Indian Space Research Organisation (ISRO) is set to launch the solar mission, Aditya-L1 today following successful Chandrayaan-3 lunar mission. Chandrayaan-3's Vikram lander soft landed on the south pole of the Moon less than two weeks ago. Here are the key points for the solar mission:

Launch details

The Aditya-L1 mission is scheduled for liftoff at 11:50 am on September 2, 2023, from the second launch pad at the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. 

Also read: Aditya L1 Mission Highlights: Countdown begins for Solar mission, mission payload to send 1,440 images per day

Sun Observation

Aditya-L1, which means "Sun" in Sanskrit, aims to explore the Sun extensively. It will conduct remote observations of the solar corona and in-situ observations of the solar wind at the Sun-Earth Lagrangian point (L1), approximately 1.5 million kilometres from Earth.

Lagrangian points

There are five Lagrangian points between the Sun and the Earth, According to the ISRO. L1point in the Halo orbit is a unique position in space where the gravitational forces of the Earth and the Sun are in equilibrium. This location offers uninterrupted views of the Sun without eclipses, making it ideal for solar research. 

Mission timeline

The mission is expected to take 125 days to reach its intended orbit around L1 according to ISRO chairman S Somanath. It will initially remain in Earth-bound orbits for 16 days, undergoing five manoeuvres to gain the necessary velocity using onboard propulsion.

Also read: Aditya L1 launch countdown begins! When and where to watch live streaming of Solar mission

Complex orbit

Upon reaching L1, Aditya-L1 will be manoeuvred into an irregularly shaped orbit, roughly perpendicular to the line joining the Earth and the Sun, where it will spend its mission life.

Solar study 

Studying the Sun in detail will provide valuable insights into stars in the Milky Way and other galaxies said ISRO. Aditya-L1's primary payload, the Visible Emission Line Coronagraph (VELC), will transmit 1,440 images per day to Earth for analysis.

Payload development

VELC, the mission's most technically challenging payload, was developed in collaboration with the Indian Institute of Astrophysics CREST and ISRO, reported HT.

Mission objectives

The mission aims to better understand the solar atmosphere, solar wind distribution, temperature anisotropy, and more. The spacecraft will stay approximately 1.5 million kilometres from Earth, constantly facing the Sun, which is about 1% of the Earth-Sun distance. 

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First Published:2 Sep 2023, 07:58 AM IST
Business NewsScienceAditya-L1: ISRO’s solar mission set to launch today from Sriharikota after Chandrayaan-3 success. Key highlights

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