BackForward Satellite: EOS-04 

Satellite details
Acronym EOS-04
Full name Earth Observation Satellite - 04 (also known as RISAT-1A)
WIGOS Station Identifier ---
Satellite Description
  • 6th flight unit of the RISAT programme.  
  • Main mission: land observation. 
  • Provides images under all-weather conditions for applications such as agriculture, forestry, soil moisture, hydrology, and flood mapping. 
Mass at launch 1710 kg Dry mass
Power 2200 W
Data access link no link provided
Data access information
  • Direct reception at appointed ground stations in X-band.
  • Off-line data are distributed by the National Remote Sensing Center (NRSC) in Hyderabad. Web site:
Orbit Sunsynchronous orbit Altitude 529 km
ECT 06:00 desc


Space agency ISRO
Status Operational
Details on Status
(as available)
Launch 14 Feb 2022 EOL ≥2027
Last update: 2023-07-24
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on EOS-04

Acronym Full name
SAR-C Synthetic Aperture Radar (C-band)
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
SAR-C active 5 GHz - 5.35 GHz 0 MHz - C-band SAR