Aditya-L1 has successfully entered the Halo orbit around the L1 point

 

Aditya L1 Mission Succeed

On January 6, 2024, the Indian Space Research Organization, ISRO, successfully placed the Aditya L1 satellite into final orbit.  Aditya L1 has successfully entered the Halo orbit around the L1 point. 

Aditya L1 is India's first space-based mission to study the Sun. The spacecraft is in a halo orbit around the Sun-Earth system's Lagrange point 1 (L1), which is around 1.5 million kilometers away from Earth. A satellite in halo orbit around the L1 point has the significant benefit of continually observing the Sun with no eclipses. This will give us a better chance of seeing solar activity and its impact on space weather in real time.

Some Facts

The spacecraft includes seven payloads that will use electromagnetic, particle, and magnetic field detectors to study the photosphere, chromosphere, and the Sun's outermost layers (the corona). Four payloads directly see the Sun from the exceptional vantage point L1, while the remaining three payloads conduct in-situ particle and field investigations at the Lagrange point L1, offering essential scientific studies of the propagatory influence of solar dynamics in the interplanetary medium.

The Aditya L1 payload suites are intended to offer critical information for understanding the problem of coronal heating, coronal mass ejection, pre-flare and flare activities and their characteristics, dynamics of space weather, particle and field propagation, and so on.

Objectives 

1.) Dynamics of the solar upper atmosphere (chromosphere and corona).

2.) The investigation of chromospheric and coronal heating, the physics of partly ionized plasma, the start of coronal mass ejections, and flares.

3.) Observe the in-situ particle and plasma environment for data on particle dynamics from the Sun.

4.) The solar corona's physics and heating mechanism.

5.) Coronal and coronal loops plasma diagnostics: Temperature, velocity, and density are all variables.

6.) CME evolution, dynamics, and genesis.

7.) Determine the sequence of processes that occur at many levels (chromosphere, base, and extended corona) and lead to solar eruptive events.

8.) Topology of magnetic fields and magnetic field measurements in the solar corona.

9.) Space weather drivers (the genesis, composition, and behavior of solar wind.

Aditya-L1's sensors are designed to examine the solar atmosphere, namely the chromosphere and corona. At L1, in-situ equipment will observe the local environment. There are seven payloads on board, four of which do distant sensing of the Sun and three of which perform in-situ observation.

Payloads and their Capabilities

Payload	Capability
Visible Emission Line Coronagraph(VELC)	Corona/Imaging & Spectroscopy
Solar Ultraviolet Imaging Telescope (SUIT)	Photosphere and Chromosphere Imaging- Narrow & Broadband
Solar Low Energy X-ray Spectrometer (SoLEXS)	Soft X-ray spectrometer: Sun-as-a-star observation
High Energy L1 Orbiting X-ray Spectrometer(HEL1OS)	Hard X-ray spectrometer: Sun-as-a-star observation
Aditya Solar wind Particle Experiment(ASPEX)	Solar wind/Particle Analyzer Protons & Heavier Ions with directions
Plasma Analyser Package For Aditya (PAPA)	Solar wind/Particle Analyzer Electrons & Heavier Ions with directions
Advanced Tri-axial High Resolution Digital Magnetometers	In-situ magnetic field (Bx, By and Bz)