Aditya-L1 successfully completes fourth earth-bound manoeuvre, informs ISRO | Oneindia News
Aditya L1 spacecraft, India's first space-based mission to study the Sun, during the early hours on Friday, underwent the fourth earth-bound manoeuvre successfully. The Indian Space and Research Organisation (ISRO) said that the next manoeuvre, a send-off from Earth, is scheduled for September 12, 2023 around 2 am IST.
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00:00 Aditya L1 spacecraft, India's first space-based mission to study the sun, during the early
00:07 hours on Friday, underwent the fourth Earth-bound manoeuvre successfully.
00:12 The Indian Space Research Organisation said that the next manoeuvre, a stand-off from
00:16 Earth, is scheduled for September 12, 2023 around 2 a.m. IST.
00:22 The new orbit attained is 256 km into 121,973 km.
00:28 The operation, known as the fourth Earth-bound manoeuvre, proceeded without a hitch, marking
00:33 yet another achievement in the mission's ongoing journey.
00:36 The ISRO ground stations in Mauritius, Bengaluru, SDFC, SHAR and Port Blair diligently tracked
00:42 the satellite during this crucial phase.
00:45 Additionally, a transportable terminal situated in the Fiji Islands dedicated to the Aditya
00:50 L1 mission provided vital support for post-burn operations.
00:54 Aditya L1 is the first Indian space-based observatory to study the sun from a hallow
00:58 orbit around the first Sun-Earth Lagrangian point, which is located roughly 1.5 million
01:03 km from the Earth.
01:05 The first, second and third Earth-bound manoeuvre was successfully performed on September 3,
01:10 5 and 10, respectively.
01:12 The manoeuvres are being performed during the spacecraft's 16-day journey around the
01:16 Earth, during which the spacecraft will gain the necessary velocity for its further journey
01:20 to L1.
01:21 With the completion of four Earth-bound orbital manoeuvres, Aditya L1 will next undergo a
01:26 Trans-Lagrangian-1 insertion manoeuvre, marking the beginning of its nearly 110-day trajectory
01:32 to the destination around the L1 Lagrange point.
01:36 Aditya L1 stands as India's inaugural space-based observatory designated to study the sun from
01:41 a hallow orbit situated around the first Sun-Earth Lagrangian point, positioned roughly 1.5 million
01:47 km away from the Earth.
01:48 On September 2, the Aditya L1 spacecraft was successfully launched by ISRO's Polar Satellite
01:53 Launch Vehicle from the second launch pad of Satish Dhawan Space Centre in Sriharikota.
01:59 After a flight duration of 63 minutes and 20 seconds, the spacecraft was injected into
02:04 an elliptical orbit measuring 235 x 19,500 km around the Earth.
02:09 The strategic positioning of a spacecraft in a hallow orbit around the L1 point offers
02:13 a unique advantage.
02:14 It ensures uninterrupted observation of the sun, free from any oculation or eclipses.
02:19 This enables real-time monitoring of solar activities and their impact on space weather.
02:23 Aditya L1 is equipped with seven scientific payloads, all developed indigenously by ISRO
02:29 and national research laboratories including the Indian Institute of Astrophysics in Bengaluru
02:34 and the Inter-University Centre for Astronomy and Astrophysics in Pune.
02:38 These payloads are designed to observe the photosphere, chromosphere and the outermost
02:42 layers of the sun, the corona, using electromagnetic particle and magnetic field detectors.
02:47 Furthermore, Aditya L1's unique vantage point at L1 allows four payloads to directly
02:52 observe the sun, while the remaining three payloads perform in-situ studies of particles
02:57 and fields at the Lagrange point L1.
02:59 These scientific instruments promise crucial insights into coronal heating, coronal mass
03:03 ejections, pre-flare and flare activities, space weather dynamics and the propagation
03:08 of particles and fields.
03:10 The mission's objectives are aligned with scientists' quest to comprehend the intricate
03:14 dynamics of space surrounding Earth's sun system, with the Lagrange points serving as
03:18 strategically advantageous locations for spacecraft to operate with reduced fuel consumption.
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