| Names | OceanSat-1 IRS-P4 Indian Remote Sensing satellite-P4 |
|---|---|
| Mission type | Earth observation Oceanography |
| Operator | ISRO |
| COSPAR ID | 1999-029A |
| SATCATno. | 25756 |
| Website | https://www.isro.gov.in/ |
| Mission duration | 5 years (planned) 11 years (achieved) |
| Spacecraft properties | |
| Spacecraft | OceanSat-1 |
| Bus | IRS-1A[1] |
| Manufacturer | Indian Space Research Organisation |
| Launch mass | 1,050 kg (2,310 lb) |
| Dimensions | 2.80 m x 1.98 m x 2.57 m |
| Power | 750watts |
| Start of mission | |
| Launch date | 26 May 1999, 06:22UTC |
| Rocket | Polar Satellite Launch Vehicle,PSLV-C2 |
| Launch site | Satish Dhawan Space Centre,First Launch Pad (FLP) |
| Contractor | Indian Space Research Organisation |
| Entered service | August 1999 |
| End of mission | |
| Deactivated | 8 August 2010 |
| Orbital parameters | |
| Reference system | Geocentric orbit[2] |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 719 km (447 mi) |
| Apogee altitude | 730 km (450 mi) |
| Inclination | 98.4° |
| Period | 99.0 minutes |
| Instruments | |
| Multi-frequency Scanning microwave radiometer (MSMR) Ocean Colour Monitor (OCM)[3] | |
← IRS-1D | |
Oceansat-1 orIRS-P4 was the firstIndian satellite built primarily for ocean applications. It was a part of theIndian Remote Sensing Programme satellite series. The satellite carried an Ocean Colour Monitor (OCM) and a Multi-frequency Scanning Microwave Radiometer (MSMR) foroceanographic studies. Oceansat-1 thus vastly augment the IRS satellite system ofIndian Space Research Organisation (ISRO) comprising four satellites,IRS-1B,IRS-1C,IRS-P3 andIRS-1D and extendremote sensing applications to several newer areas.[4]
Oceansat-1 was launched by theIndian Space Research Organisation'sPSLV-C2 along with theDLR-Tubsat ofGermany andKitsat-3 ofSouth Korea on 26 May 1999 from theSatish Dhawan Space Centre First Launch Pad ofSatish Dhawan Space Centre inSriharikota, India. It was the third successful launch ofPolar Satellite Launch Vehicle (PSLV).[5] It was the 8th satellite of theIndian Remote Sensing Programme (IRS) satellite series of India. Oceansat-1 was operated in aSun-synchronous orbit. On 26 May 1999, it had aperigee of 719 km (447 mi), anapogee of 730 km (450 mi), aninclination of 98.4°, and anorbital period of 99.0 minutes.[2]
Oceansat-1 carried two instruments:
Although initially launched with a lifespan of 5 years, Oceansat-1 completed its mission on 8 August 2010, after serving for 11 years.[5]