METSAT was an Indian (ISRO) meteorological, geostationary satellite designed to simultaneously obtain atmospheric cloud cover, water vapor, and temperature data. The triaxially-stabilized, 1,060-kg (including 560 kg of propellant), 550-W satellite carried a VHRR (Very High Resolution Radiometer) scanning radiometer for three-band images (visible, thermal infrared, and water vapor infrared band) each at a spatial resolution of 2 km x 2 km. It carried a Data Relay Transponder (DRT) to provide data from fixed/mobile ground-level weather platforms.

METSAT was the first exclusive meteorological satellite built by ISRO. Prior Indian meteorological instruments had been combined with telecommunication and television payloads in the INSAT series. METSAT was a precursor for a future INSAT system that was to have separate satellites for meteorology and telecommunications. This would allow greater capabilities in future dedicated INSAT communications satellites. METSAT 's DRT would relay the data sent by earth platforms to the Meteorological Data Utilization Centre at New Delhi. Such platforms were installed all over India.

• 2002 September 12 - METSAT - Launch Site: Sriharikota. Launch Complex: PSLV. Launch Vehicle: PSLV. Mass: 1,000 kg (2,200 lb). Perigee: 35,764 km (22,222 mi). Apogee: 35,809 km (22,250 mi). Inclination: 0.30 deg. Period: 1,436.10 min.
  METSAT 1 was an Indian (ISRO) meteorological, geostationary satellite that was launched by an upgraded, four-stage PSLV-C4 rocket. The satellite was manoeuvred from the transfer orbit to a geostationary postion at 37° E longitude on September 16, and then was parked at 74° E longitude on September 24. As of 2007 Mar 11 located at 74.00E drifting at 0.007W degrees per day.