5th MAY,2017.


The South Asian satellite GSAT-9 ,Geostationary communication satellite was realeased by ISRO with the help of GSLV-F09 into a geosynchronous transfer orbit (GTO)  at Satish Dhawan Space Centre (SHAR),shriharikota. It was the eleventh flight of GSLV (Geosynchronous Satellite Launch Vehicle) . Also it was the consecutive 4th flight with CUS(cryogenic upper stage).

The GSAT-9 weighs about 2230 kg having an overall length of about 49.1 m .The primary application of this satellite is to provide various communication applications in KU-band with coverage over south Asian countries.The main structure of the satellite is cuboid in shape while covering around a central cylinder carrying a communication transponders operating in KU-band.


Lift – off  mass                                                                                Physical Dimensions

2230 kg                                                                                             1.53m*1.65m*2.40m
 Dry mass:
 976                                                                                                      Mission life 
                                                                                                              12 years
Power generation:
3500 watts,two 90AH lithium ion battery
                                                                                                   Launch Vehicle: 
                                                                                                GSLV-F09 / GSAT-9
Type of Satellite: 
                                                                                                       Orbit Type: 
Ku-band Transponders
1.40m ku band reflector on west side(for reception)
2.0m by 2.2m kumband reflector on east side(for transmission)
Propulsion system;
440N liquid apogee motor
eight 10N and EIGHT 22N chemical thrusters

Satellite Coverage Area;

South Asian Countries


The ultra tripple junction solar cells generate about 3500 watts of electrical power using two ultra solar arrays of GSAT-9 .The AOCS (Attitude and Orbit Control System) using momentum wheels, thrusters and magnetic torquers maintains its orientation.The propulsion system of the satellite consists of LAM(Liquid Apogee Motor) and chemical thrusters using liquid propellants for initial orbit raising and station keeping.It has also plasma thrusters for station keeping.