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PSLV-C57/Aditya-L1 Mission

January 25, 2024

Successful Deployment of Magnetometer Boom on Aditya-L1 in Halo Orbit

January 6, 2024

Aditya-L1 solar observatory is successfully inserted into Halo-Orbit around Sun-Earth L1

December 8, 2023

In-orbit Health Status of Plasma Analyser Package for Aditya (PAPA)
The SUIT payload captures full-disk images of the Sun in near ultraviolet wavelengths

December 1, 2023

Solar wind Ion Spectrometer (SWIS) in the Aditya Solar wind Particle Experiment(ASPEX) payload is made operational

November 7, 2023

HEL1OS captures first High-Energy X-ray glimpse of Solar Flares

October 8, 2023

A Trajectory Correction Maneuvre (TCM), originally provisioned, was performed on October 6, 2023, for about 16 s. It was needed to correct the trajectory evaluated after tracking the Trans-Lagrangean Point 1 Insertion (TL1I) maneuvre performed on September 19, 2023. TCM ensures that the spacecraft is on its intended path towards the Halo orbit insertion around L1

September 30, 2023

The spacecraft has escaped the sphere of Earth's influence, on its way to the Sun-Earth Lagrange Point 1(L1).

September 25, 2023

An assessment of space situation around Sun-Earth Lagrange Point L1

September 19, 2023

The spacecraft is currently travelling to the Sun-Earth L1 point.

September 18, 2023

Aditya-L1 has commenced the collection of scientific data.

September 15, 2023

Fourth Earth-bound maneuvre (EBN#4) is performed successfully. The new orbit attained is 256 km x 121973 km.

September 10, 2023

Third Earth-bound maneuvre (EBN#3) is performed successfully. The new orbit attained is 296 km x 71767 km.

September 05, 2023

Second Earth-bound maneuvre (EBN#2) is performed successfully. The new orbit attained is 282 km x 40225 km.

September 03, 2023

The next maneuvre (EBN#2) is scheduled for September 5, 2023, around 03:00 Hrs. IST
The first Earth-bound maneuvre (EBN#1) is performed successfully from ISTRAC, Bengaluru. The new orbit attained is 245 km x 22459 km
The satellite is healthy and operating nominally

September 02, 2023

India's first solar observatory has begun its journey to the destination of Sun-Earth L1 point
The vehicle has placed the satellite precisely into its intended orbit
The launch of Aditya-L1 by PSLV-C57 is accomplished successfully

More Details

Aditya L1 shall be the first space based Indian mission to study the Sun. The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million km from the Earth. A satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses. This will provide a greater advantage of observing the solar activities and its effect on space weather in real time. The spacecraft carries seven payloads to observe the photosphere, chromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors. Using the special vantage point L1, four payloads directly view the Sun and the remaining three payloads carry out in-situ studies of particles and fields at the Lagrange point L1, thus providing important scientific studies of the propagatory effect of solar dynamics in the interplanetary medium

The suits of Aditya L1 payloads are expected to provide most crucial informations to understand the problem of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, propagation of particle and fields etc.

Science Objectives:

The major science objectives of Aditya-L1 mission are:

  • Study of Solar upper atmospheric (chromosphere and corona) dynamics.
  • Study of chromospheric and coronal heating, physics of the partially ionized plasma, initiation of the coronal mass ejections, and flares
  • Observe the in-situ particle and plasma environment providing data for the study of particle dynamics from the Sun.
  • Physics of solar corona and its heating mechanism.
  • Diagnostics of the coronal and coronal loops plasma: Temperature, velocity and density.
  • Development, dynamics and origin of CMEs.
  • Identify the sequence of processes that occur at multiple layers (chromosphere, base and extended corona) which eventually leads to solar eruptive events.
  • Magnetic field topology and magnetic field measurements in the solar corona .
  • Drivers for space weather (origin, composition and dynamics of solar wind .

Aditya-L1 Payloads:

ADITYAL1

The instruments of Aditya-L1 are tuned to observe the solar atmosphere mainly the chromosphere and corona. In-situ instruments will observe the local environment at L1. There are total seven payloads on-board with four of them carrying out remote sensing of the Sun and three of them carrying in-situ observation.

Payloads along with their major capability of scientific investigation.

Type Sl. No. Payload Capability
Remote Sensing Payloads 1 Visible Emission Line Coronagraph(VELC) Corona/Imaging & Spectroscopy
2 Solar Ultraviolet Imaging Telescope (SUIT) Photosphere and Chromosphere Imaging- Narrow & Broadband
3 Solar Low Energy X-ray Spectrometer (SoLEXS) Soft X-ray spectrometer: Sun-as-a-star observation
4 High Energy L1 Orbiting X-ray Spectrometer(HEL1OS) Hard X-ray spectrometer: Sun-as-a-star observation
In-situ Payloads
5 Aditya Solar wind Particle Experiment(ASPEX) Solar wind/Particle Analyzer Protons & Heavier Ions with directions
6 Plasma Analyser Package For Aditya (PAPA) Solar wind/Particle Analyzer Electrons & Heavier Ions with directions
7 Advanced Tri-axial High Resolution Digital Magnetometers In-situ magnetic field (Bx, By and Bz).

More Details