IRS-P4 Ocean Sat Launch Date 26.05.1999
IRS-P4 (OCEANSAT) is the first satellite primarily built for Ocean applications, weighing 1050 kg placed in a Polar Sun Synchronous orbit of 720 km, launched by PSLV-C2 from SHAR Centre, Sriharikota on May 26, 1999.
This satellite carries Ocean Colour Monitor (OCM) and a Multi - frequency Scanning Microwave Radiometer (MSMR) for oceanographic studies. IRS-P4 thus vastly augment the IRS satellite system of ISRO comprising four satellites, IRS-1B, IRS-1C, IRS-P3 and IRS-1D and extend remote sensing applications to several newer areas.
This satellite carries Ocean Colour Monitor (OCM) and a Multi - frequency Scanning Microwave Radiometer (MSMR) for oceanographic studies. IRS-P4 thus vastly augment the IRS satellite system of ISRO comprising four satellites, IRS-1B, IRS-1C, IRS-P3 and IRS-1D and extend remote sensing applications to several newer areas.
Launch date | May 26, 1999 |
Launch site | SHAR, Sriharikota |
Launch vehicle | PSLV - C2 |
Orbit | Polar Sun Synchronous |
Altitude | 720 km |
Inclination | 98.28 deg |
Period | 99.31 min |
Local time of Eq. crossing | 12 noon |
Repetitivity cycle | 2 days |
Size | 2.8m x 1.98m x 2.57m |
Mass at lift off | 1050 kg |
Length when fully deployed | 11.67 m |
Attitude and Orbit Control | 3-axis body-stabilised using Reaction Wheels, Magnetic Torquers and Hydrazine Thrusters |
Power | 9.6 Sq.m Solar Array generating 750w Two 21 Ah Ni-Cd Battries |
Mission Life | 5 years |
