EOS-04

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EOS-04 Satellite
Radar Imaging Satellite-1A
Imaging radar
ISRO
2022-013A
51656
www.isro.gov.in/launcher/pslv-c52-eos-04-mission
10 years (planned)4 years, 1 month, 30 days (in progress)
EOS-04
Indian Space Research Organisation
1,710 kg (3,770 lb)
2280 watts
14 February 2022, 00:29 UTC
PSLV-C52
Satish Dhawan Space Centre, First Launch Pad (FLP)
Indian Space Research Organisation
Geocentric orbit
Sun-synchronous orbit
526.7 km (327.3 mi)
543.4 km (337.7 mi)
97.6°
95.2 minutes
Synthetic Aperture Radar (C-band) (SAR-C)
EOS series RISAT series

EOS-04 or Earth Observation Satellite - 04 (formerly known as RISAT-1A) is an Indian Space Research Organisation Radar Imaging Satellite designed to provide high-quality images under all weather conditions for applications such as Agriculture, Forestry & Plantations, Soil Moisture & Hydrology and Flood mapping. It is a follow on to RISAT-1 satellite with similar configuration. The satellite is developed by the ISRO and it is the sixth in a series of RISAT satellites.

Synthetic aperture radar can be used for Earth observation irrespective of the light and weather conditions of the area being imaged. It complements/supplements data from Resourcesat, Cartosat and RISAT-2B Series. The satellite carries a C-band synthetic-aperture radar (SAR) and has a liftoff mass of 1,710 kg (3,770 lb). The EOS-04 orbit is polar and Sun-synchronous at 06:00 AM LTDN, at approximate altitude of 529 km.

Assembly Integration and Testing of spacecraft was done by a consortium led by Alpha Design Technologies Ltd. Approximate cost of EOS-04 is ₹490 crore (equivalent to ₹550 crore or US$65 million in 2023).

EOS-04 was launched on the Polar Satellite Launch Vehicle (PSLV-C52) from First Launch Pad(FLP), SDSC, SHAR, Sriharikota at 05:59 hrs IST (00:29 hrs UTC) on 14 February 2022. It was launched along with two ridesharing satellites, INS-2TD a technology demonstrator by ISRO and INSPIREsat-1 a university satellite.

EOS-04 captured first images on 25 February 2022 after launch.

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• RISAT
• PSLV

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