IRS-1A

Name:IRS-1A

LaunchDate:17.03.1988

    
    IRS-1A, the first of the series of indigenous state-of-art remote sensing satellites, was successfully launched into a polar sun-synchronous orbit on March 17, 1988 from the Soviet Cosmodrome at Baikonur. IRS-1A carries two cameras, LISS-I and LISS-II with resolutions of 73 metres and 36.25 metres respectively with a swath width of about 140 km during each pass over the country.

Mission completed during July 1996 after serving for 8 years and 4 months.

Mission	Operational Remote Sensing
Weight	975 kg
Onboard power	600 Watts
Communication	S-band, X-band and VHF(commanding only)
Stabilization	Three axis body stabilized (zero momentum) with 4 Reactions Wheels, Magnetic torquers
RCS	Monopropellant Hydrazine based with sixteen 1 Newton thrusters
Payload	Three solid state Push Broom Cameras: LISS-1(72.5 metre resolution), LISS-2A and LISS-2B (36.25 metre resolution)
Launch date	March 17, 1988
Launch site	Baikanur Cosmodrome Kazakhstan
Launch vehicle	Vostok
Orbit	904 km Polar Sun-synchronous
Inclination	99.08o
Repetivity	22 days (307 orbits)
Local time	10.30 a.m. (descending node)
Mission completed during	July 1996