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Home : Missions : Earth Observation : SALIENT FEATURES OF METSAT (KALPANA-1) Last updated on: 30-Jun-2015


Mission Meteorological satellite
  • VHRR imageries in visible, thermal infra red and WV bands
  • Weather Data Relay Transponder ( DRT)
Orbit / location Geostationary orbit, 740 East longitude
Mission life 7 years
Platform I-1K bus
Cuboid Size 1.476m x 1.53m x 1.505m
Dry Mass 498 kg
Lift - off Mass 1060 kg
  • Single solar panel with GaAs cells providing 560W power
  • Eclipse support using single 18Ah NiCd batteries
Control System 3-axes body stabilized in orbit using Earth sensors, Sun sensors, Momentum and Reaction Wheels, Magnetic torquers and twelve 22N bipropellant thrusters
Propulsion System Bipropellant system mono Methyl Hydrazine (MMH) as fuel and Mixed oxides of Nitrogen (MON-3) as oxidizer with
  • One 440N Liquid Apogee Motor (LAM) for orbit raising
  • 12 thrusters for Station keeping (22N bipropellant thrusters)
TTC System Conventional C-band Telemetry, Tracking & Command Systems
Special Features / New Technologies
  • First exclusive Meteorological satellite
  • First sub GTO launch by a PSLV
  • Thrust & LAM axis in East - West direction
  • Single sunlit regulated power bus
Launch Launched on 12th September 2002 onboard PSLV-C4
Present status Mission life over