IRS P4

Also called Oceansat 1

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General

Designation	25758 / 99029C
Launch date	26 May 1999
Country of origin	India
Mission	Remote sensing
Perigee/Apogee	720 km sun-synchronous (12 AM)
Inclination	98.3°
Period	99.3 min (2-day revisit)
Launch vehicle	PSLV #5

A 100 kg piggybacked payload from Korea will be included

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External resources

http://www.ioccg.org/general/ocm/ocm.html

sat-index articles

Technical data

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Specifications

Prime contractor	ISRO
Platform
Mass at launch	1036 kg
Mass in orbit
Dimension	2.8 x 1.98 x 2.57 m
Solar array
Stabilization	3-axis
DC power	750 W
Design lifetime	5 years

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Multi-Channel Microwave Radio Meter

Will provide information about sea surface temperatures, wind speed and water vapour, all conducive for fisheries forecasts. Swath 1360 km, Frequencies: 6.6, 10.65, 18 & 21 GHz

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Ocean Colour Monitor

Will measure sea temperatures even up to 1 to 2 kelvins identifying them with colours with the help of 8 spectral bands (400 to 885 nm). Swath 1420 km

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