Quick Facts Satellite: IRS P3 Sensor: Modular Optoelectronic Scanner (MOS) Launch: 21 March 1996 Status: Operational MOS Effective Revisit Time: approximately 3 days Spatial Resolution: 500 metres Swath Width: 200km Primary Marine Applications: ocean colour (phytoplankton pigments & other constituents which colour water such as yellow substances and sediments)