Aditya L1 Launch Highlights: Observatory's First Orbit-Raising Manoeuvre To Occur On This Date
Aditya-L1, India’s first space-based solar observatory to study the Sun, was launched today (September 2), at 11:50 am IST, atop a PSLV-XL (Polar Satellite Launch Vehicle) rocket, from Sriharikota.
Aditya-L1's first orbit-raising manoeuvre will occur on September 3, 2023.
OP Gupta, a senior engineer at Nehru Planetarium, New Delhi, said after the successful launch of Aditya-L1 that till now, only Earth-based observatories have been used in India to study the Sun. He said there is such an observatory in Udaipur. However, Aditya-L1 marks the first time that a space-based solar observatory will study the Sun.
After the successful launch of Aditya-L1, Union Minister of Science and Technology Jitendra Singh said that this is “indeed a sunshine moment for India”.
Union Minister of Science and Technology Jitendra Singh thanked Prime Minister Narendra Modi after the successful launch of Aditya-L1. He said, "Thank you, PM Modi for making this happen by opening up new vistas for India's new space sector and telling us that sky is not the limit”.
ISRO Chief S Somanath said after the launch of Aditya-L1 that the journey of the spacecraft to L1 is a very long one.
After the successful launch of Aditya-L1, India’s first solar mission, Prime Minister Narendra Modi congratulated the scientists and engineers at the Indian Space Research Organisation (ISRO).
The Aditya-L1 mission is accomplished because PSLV-C57 successfully placed the solar observatory into low-Earth orbit.
It has been an hour since the launch of Aditya-L1, India's first solar mission.
Aditya-L1 is likely to become the second spacecraft to be placed at Lagrange point 1 (L1), after the NASA-ESA Solar & Heliospheric Observatory (SOHO).
The third stage of the PSLV rocket carrying Aditya-L1 has successfully separated from the launch vehicle.
ISRO has successfully launched Aditya-L1, India’s first space-based observatory to study the Sun. Aditya-L1 began its journey towards the Sun after being launched atop a PSLV-XL rocket, at 11:50 am IST on Saturday, September 2.
ISRO is set to launch Aditya-L1 in less than two minutes.
ISRO will launch Aditya-L1, India's first solar mission, in less than five minutes.
PSLV-C57, the 59th flight of the Polar Satellite Launch Vehicle (PSLV), will place Aditya-L1, India's first space-based solar observatory, in low-Earth orbit.
Aditya-L1, India's first space-based solar observatory to study the Sun, will take off in less than 10 minutes.
Preparations for the launch of Aditya-L1, India’s first space-based solar observatory to study the Sun, are underway at Sriharikota.
ISRO is set to launch Aditya-L1, India’s first space-based solar observatory to study the Sun, at 11:50 am IST on Saturday. Aditya-L1 will be launched atop a PSLV-XL rocket. The mission, also known as PSLV-C57, marks the 59th flight of PSLV, and the 25th flight of the PSLV-XL rocket. Aditya-L1 will be placed in an Earth-bound orbit.
ISRO has started the livestream event for the launch of Aditya-L1, India's first space-based solar observatory to study the Sun.
Aditya-L1 is set to be launched towards the Sun in less than an hour from now. It is India's first space-based solar observatory to study the Sun.
Former ISRO Chairman G. Madhavan Nair said Saturday that the data from Aditya-L1 will help explain various phenomena taking place in the atmosphere, and aid in climate change studies.
Annapurni Subramaniam, Director, Indian Institute of Astrophysics (IIA), Bangalore, said Saturday that the IIA has delivered the Visible Line Emission Coronagraph (VELC), which is the main instrument onboard Aditya-L1. She explained that Aditya-L1 is the first mission which will look at the innermost part of the Sun’s corona.
Mayank N Vahia, a retired professor from the Tata Institute of Fundamental Research, said Saturday that Aditya-L1 will observe the Sun simultaneously in optical, ultraviolet and X-ray wavelengths.
Dr Anil Bharadwaj, the director of Physical Research Laboratory, Ahmedabad, said Saturday that Aditya-L1 is a very unique mission from India to study the Sun. He also said that it may take a month to commission all the experiments onboard Aditya-L1. After that, Aditya-L1 will be able to continuously start observing the Sun.
On Saturday, space enthusiasts and school students arrived at Satish Dhawan Space Centre in Sriharikota to witness the launch of Aditya-L1.
On Saturday, school students visited the Satish Dhawan Space Centre in Sriharikota to witness the launch of the Indian Space Research Organisation’s (ISRO’s) Aditya-L1 mission at 11:50 am IST. It is India’s first solar mission, and aims to study the Sun.
Aditya-L1, India's first solar mission, is unique because of several reasons.
1. Aditya-L1 will be placed in a halo orbit around Lagrange point (L1), allowing the spacecraft to save fuel and have an uninterrupted view of the Sun for five years.
2. It is the first spacecraft that aims to achieve spatial resolution of the solar disk in near-ultraviolet bands.
3. Aditya-L1 will study coronal mass ejection dynamics close to the solar disk.
4. The spacecraft has the ability to detect coronal mass ejections and solar flares.
5. The observatory will study the energy anisotropy of solar winds. In other words, it will study the difference in solar wind energies in different directions.
Expressing her happiness at the scheduled launch of Aditya-L1 today at 11:50 am, a tourist at Srinagar said, “It is a really proud feeling as an Indian to witness our country reach new heights because of the hard work of our scientists.”
Former scientist at the Indian Space Research Organisation (ISRO) Manish Purohit said Saturday that Aditya-L1 is a big step-forward for ISRO and India. He also said that with the new space policy, it has been clearly mandated that ISRO will play a big role in the space economy.
Aditya-L1, India's first space-based solar observatory to study the Sun, is set to begin its journey in less than two hours from now.
Prerna Chandra, a programming manager at Jawaharlal Nehru Planetarium, Delhi, said Saturday that space agencies of other countries have already conducted observations on the Sun, but India does not have a solar observatory. Therefore, through Aditya-L1, India will also have observations on the Sun. These observations will help us understand space weather and upcoming space missions, she said.
Astronomer RC Kapoor said Saturday that the launch day of Aditya-L1 is a very important day, and that the most important instrument on Aditya-L1 will study the corona of the Sun, which is the outermost layer.
On Saturday, locals in Varanasi were seen performing Havan for the successful launch of Aditya-L1, India’s first solar mission.
Explaining the destination of Aditya-L1, former ISRO scientist and Padma Shri awardee Mylswamy Annadurai said that it is technically very challenging to acquire the L1 point, enter an orbit around that, and to survive there for the five years with the need to make accurate findings. He also said that this is scientifically going to be rewarding because seven instruments will try to understand the dynamics and phenomena of what is happening in the Sun.
Ahead of the launch of Aditya-L1, India’s first space-based solar observatory to study the Sun, Congress leader Surendra Rajput congratulated the scientists and the people who established the Indian Space Research Organisation (ISRO).
Aditya-L1, India's first solar mission, will begin its journey towards the Sun in less than three hours from now.
Aditya-L1 will be launched in about three hours from now, at 11:50 am IST, from Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.
Aditya L1, India's first space-based solar observatory to study the Sun, is equipped with seven payloads, four of which are remote sensing payloads, and three are in-situ payloads. The remote sensing payloads will serve as spectrometers, and the in-situ payloads include particle analysers and a magnetometer.
Some people in Varanasi were seen performing a Havan on Saturday to pray for the successful launch of Aditya-L1, India's first solar mission.
A visitor at Satish Dhawan Space Centre in Sriharikota, the site from which Aditya-L1 will be launched today, said that he is "very excited" to be there at the launch site of Aditya-L1.
Aditya-L1 will take a complex path towards the Sun. After launch, the spacecraft will enter a circular low-Earth orbit, and undergo orbit-raising manoeuvres to make its orbit more elliptical than the previous one, following each perigee burn. The next stage is exit from Earth's gravitational sphere of influence (SOI). Then, Aditya-L1 will enter the cruise phase. After this, halo orbit insertion will take place. This entire journey is expected to take about 125 days.
The Indian Space Research Organisation (ISRO) will launch Aditya-L1, India's first space-based solar observatory to study the Sun, today, at 11:50 am IST, from Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.
The launch of Aditya-L1, India's first space-based solar observatory to study the Sun, will be streamed live on Saturday at Hyderabad's BM Birla Planetarium, an official told news agency ANI.
Aditya-L1, India's first space-based solar observatory to study the Sun, will be launched from Sriharikota today, at 11:50 am IST. Preparations for launch are underway at Sriharikota.
Aditya-L1 aims to study the different layers of the solar atmosphere, which includes the photosphere, chromosphere, and corona. The photosphere is the innermost layer of the Sun's atmosphere, the chromosphere is a reddish layer located above the photosphere, and the corona is the outermost layer. Aditya-L1 will also study the mechanisms of solar activities and eruptive events such as coronal mass ejections and solar flares.
Aditya-L1's final destination is a halo orbit around Lagrange point 1 (L1), which lies along the Sun-Earth line. L1 is located 1.5 million kilometres from Earth. Aditya-L1 is expected to take 125 days to reach the halo orbit around L1.
Aditya-L1 will be launched atop a Polar Satellite Launch Vehicle on September 2, 2023, at 11:50 am IST, from Satish Dhawan Space Centre, Sriharikota. The launch can be watched live on the official YouTube channel of the Indian Space Research Organisation (ISRO), or on DD National.
Aditya-L1, India's first solar-based space observatory, will be launched at 11:50 am IST on September 2, 2023, from Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.
Background
Aditya-L1, India’s first space-based solar observatory to study the Sun, will be launched today (September 2), at 11:50 am IST, atop a PSLV-XL (Polar Satellite Launch Vehicle) rocket, from Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh. The Indian Space Research Organisation (ISRO) aims to place Aditya-L1 in a halo orbit around a special point in space, known as Lagrange point 1 (L1). It will take Aditya-L1 about 125 days to reach its destination, ISRO Chief S Somanath has said.
L1 is located 1.5 million kilometres from Earth, which is about one per cent of the distance between the Sun and the Earth.
Aditya-L1: Where will it be placed? And why?
Aditya-L1 will be placed in a halo orbit around a Lagrange point because it is a special location in space where the gravitational forces exerted by the Sun and the Earth are balanced, as a result of which an equilibrium condition exists, and the spacecraft is able to save fuel. The speciality of L1 is that it will allow Aditya-L1 to have an uninterrupted view of the Sun for five years, which is the spacecraft’s mission duration.
Aditya-L1: What will the spacecraft’s trajectory be?
After being launched, Aditya-L1 will move towards low-Earth orbit, and be placed into a circular orbit. Next, the spacecraft will undergo an orbit-raising manoeuvre to ensure that its orbit becomes elliptical. Aditya-L1 will undergo three such orbit-raising manoeuvres to ensure that after each perigee burn, the orbit becomes more elliptical.
After this, Aditya-L1 will exit Earth’s sphere of influence and enter the cruise phase. This is a crucial phase because it will place Aditya-L1 on the path leading to halo orbit insertion. Once Aditya-L1 reaches the halo orbit, it will keep hovering around L1 with minimal fuel expenditure.
Aditya-L1: What its payloads are, and what they will do
The spacecraft is equipped with seven payloads, four of which are spectrometers, two are particle analysers, and one is a magnetometer.
The spectrometers are called the remote sensing payloads, and the particle analysers and the magnetometer are called the in-situ payloads.
Aditya-L1 will study solar activities, and also conduct in-situ experiments on the environment around L1.
Aditya-L1: When and how to watch
One can witness the launch of Aditya-L1 live on the official website, YouTube channel, or Facebook account of ISRO, or on DD National. The livestream will start at 11:20 am IST.
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