Isro successfully launches EOS-04

The Polar Satellite Launch Vehicle blasted off at 05:59 am from the first launch pad of Satish Dhawan Space Centre, at the end of a 25-hour countdown, marking the space agency’s first mission launch in 2022.

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The Indian Space Research Organisation (Isro) successfully launched its earth observation satellite EOS-4 and two co-passenger technology demonstrator and scientific satellites at 5:59 am Monday from the first launch pad at the country’s only spaceport in Sriharikota, Andhra Pradesh.

“After a flight of about 17 minutes 34 seconds three satellites namely EOS-04, INSPIREsat-1 and INST-2TD were injected successfully into a sun-synchronous polar orbit of 529 km. The orbit achieved for the satellites is very close to the intended orbits,” the space agency said in a statement.

After separation, two solar arrays of EOS-04 deployed automatically and Isro Telemetry Tracking and Command Network (ISTRAC) in Bengaluru assumed control. The satellite will be manoeuvred to its final position and begin providing data in a few days.

This was the country’s first mission this year, in fact, it was the first mission since the failure of the GSLV F10 mission in August 2021. The PSLV-C52/EOS-04 mission too has been delayed twice already due to the coronavirus pandemic. Initially planned for the third quarter of 2021, the launch got pushed to the fourth quarter and finally to early 2022.

This was the first mission of the space agency under the chairmanship of S Somanath, who took over as the chairperson Isro and secretary department of space in January. Keeping his remarks short, the chairperson thanked his teams and said that the satellite was a big asset for the country. S Somanath ended his less-than-a-minute long address with, “We will be back again with the next launch of PSLV very soon. Till then, goodbye.”

The 1,700kg EOS-04 is a radar imaging satellite capable of providing high-quality images under all weather conditions. It can be used to capture images for agriculture, forestry, flood mapping, soil moisture and hydrology. The satellite has a mission life of 10 years.

The spacecraft will also carry the INS-2DT technology demonstrator satellite, which has a thermal imaging camera and can help in the assessment of land and water surface temperatures apart from mapping vegetation.

The third InspireSat-1 satellite was developed by the Indian Institute of Space Science and Technology, University of Colorado, US, Singapore’s Nanyang Technological University, and National Central University in Taiwan. This satellite will use two instruments to study ionosphere dynamics and the Sun’s coronal heating process.

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