BackForward Satellite: EOS-04 

Satellite details
Acronym EOS-04
Full name Earth Observation Satellite - 04 (also known as RISAT-1A)
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 ≥2032
Last update: 2022-05-16
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
Telecommunication frequency or microwave sensing channel information Show expert details
Service Dir or Mode Frequency Emission designator Bandwidth Polarisation D/A Data rate or Baseband Comments
SAR-C active 5350 - 5350 MHz N/R  kHz - A   C-band SAR