INSAT-4CR Placed in Near-Geosynchronous Orbit,
Antennas Deployed

September 8, 2007 

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In the fifth and final orbit-raising operation conducted from Master Control Facility (MCF) at Hassan in Karnataka at 11:04 am yesterday (September 7, 2007), INSAT-4CR has been successfully placed in near-geosynchronous orbit. Subsequently, the two antennas of the satellite which are used for transmit and receive functions, have been successfully deployed and the satellite is put in its final three axis stabilised mode.

It may be recalled that INSAT-4CR was successfully launched by GSLV-F04 on September 2, 2007 from Satish Dhawan Space Centre, Sriharikota. In yesterday’s manoeuvre, the Liquid Apogee Motor (LAM) on board the satellite was fired for a duration of 196 seconds and the satellite has achieved an orbital period of 23 hours and 42 minutes. At 7:14 am today (September 8, 2007), the satellite was put in its final three-axis stabilised mode. The East reflector (antenna) was deployed yesterday (September 7, 2007) while the West reflector was deployed today.

INSAT-4CR is presently located at 51.8 deg E longitude and is expected to reach its final orbital position of 74 deg E by September 15, 2007. After reaching its final orbital position, the satellite drift will be arrested following which in-orbit testing of the payloads will be carried out. At 74 deg E longitude, INSAT-4CR will be co-located with INSAT-3C, KALPANA-1 and EDUSAT.