PSLV C61 MISSION/EOS-09 SATELLITE

The most recent space mission by the Indian Space Research Organization (ISRO) is the EOS-09 mission on the 18th of May, 2025.  The PSLV C61/EOS-09 Satellite Mission, conducted by the ISRO, is the 101st spacecraft mission from India. This is a remarkable achievement by India, as it has already completed a century of spacecraft missions.  

PSLV C61 MISSION/EOS-09 SATELLITE

PSLV C61 MISSION

PSLV C61 MISSION/EOS-09 SATELLITE

THE EOS-09 SATELLITE

The EOS-09 is an Earth Observation Satellite, also known as the RISAT-1 B. It was launched by the launch vehicle PSLV C61 from the First Launch Pad (FLP) in Sriharikota.

PSLV C61 LAUNCH VEHICLE

The PSLV C61 launch vehicle became the 63rd flight of the Polar Satellite Launch Vehicle series.

FEATURES OF THE PSLV C61

The lift-off mass of the vehicle is 321 tonnes.

The height of the launch vehicle is 44.5 metres.

The configuration of the vehicle is 4-stage with 6 solid strap-on boosters.

PURPOSE OF THE EOS-09 SATELLITE

The EOS-09 satellite is made for increasing the potential of the Indian aerospace industry in the sector of surveillance and imaging, mainly in all-weather and day-night conditions.

FEATURES OF THE EOS-09 SATELLITE

The EOS-09 Satellite consists of a C-band synthetic aperture radar (SAR) for various applications. This satellite was made for a sun-synchronous polar orbit to ensure that consistent coverage is obtained regularly. Also, the satellite needs to be able to capture pictures of the area in constant lighting conditions. The EOS-09 satellite provides continuous and reliable information from space.

The following are the features of the EOS-09 satellite:

Payload of the EOS-09 – The payload of the EOS-09 is the Synthetic Aperture Radar (SAR).

Launch mass- The launch mass is 1696.24 kg.

Mission life – The life of the mission is 5 years.

Sustainability – The satellite consists of deorbiting fuel for secure post-mission disposal.

CAPABILITIES OF THE EOS-09 SATELLITE

The following are the capabilities of the EOS-09 satellite:

SAR Payload – The Synthetic Aperture Radar (SAR) allows all-weather imaging, which means that it can go through darkness, fog, clouds, and rain.

Better resolution – The EOS-09 satellite provides better resolution imaging, up to 1 meter resolution, and wide swath coverage.

Multiple modes of imaging – Multiple modes of imaging are supported, like the high-resolution spotlight and medium-resolution ScanSAR.

Multiple uses – This satellite is capable of being used for civilian applications and defense surveillance.

APPLICATIONS OF THE PSLV C61 MISSION/EOS-09 SATELLITE

The EOS-09 satellites are produced to observe the Earth from orbit for many types of applications, such as coastal security, agriculture, forestry, land use mapping, weather forecasting, etc.

LAUNCH AND STATUS

The spacecraft mission of the EOS-09 satellite launched aboard the PSLV C 61 could not be successful. The satellite was lost after the launch because of a problem during the third stage of the launch vehicle.

If the mission had worked efficiently, then after the deployment of the EOS-09, the Orbit Change Thrusters (OCT) would have been used to decrease the altitude of the PS4 stage. That would have been followed by passivation to limit its orbital life. This is a stage for responsible space operations.

CONCLUSION

The ISRO has launched many successful spacecraft missions. India will keep on trying and will accomplish many other successful space missions in the future. 

This article will provide you with information about the ISRO- Active Launcher: Part 1.