Sep 20, 2004


GSAT-3, known as EDUSAT is meant for distant class room education from school level to higher education. This was the first dedicated "Educational Satellite" that provide the country with satellite based two way communication to class room for delivering educational materials.

This is a Geo-synchronous satellite developed on I-2K bus. GSAT-3 was co-located with METSAT(KALPANA-1) and INSAT-3C at 74o E longitude.

Mission Education
Spacecraft Mass 1950.5 kg mass (at Lift - off)
819.4 kg (Dry mass)
Onboard power
Total four solar panel of size 2.54 M x 1.525 M generating 2040 W (EOL), two 24 AH NiCd batteries for eclipse support
3 axis body stabilised in orbit using sensors, momentum and reaction wheels, magnetic torquers and eight 10 N & 22N reaction control thrusters.
440 N Liquid Apogee Motor with MON - 3 and MMH for orbit raising
  • Six upper extended C - band transponders
  • Five lower Ku band transponders with regional beam coverage
  • One lower Ku band National beam transponder with Indian main land coverage
  • Ku beacon
  • 12 C band high power transponders with extended coverage, covering southeast and northwest region apart from Indian main land using 63 W LTWTAs
Launch date September 20, 2004
Launch site SHAR, Sriharikota, India
Launch vehicle GSLV-F01
Orbit Geostationary (74oE longitude)
Mission Life 7 Years (minimum)


प्रमोचन भार / Launch Mass: 
1950.5 kg
आयाम / Dimension: 
2.54 m x 1.525 m
मिशन कालावधि / Mission Life : 
7 Years (minimum)
शक्ति / Power: 
2040 W
प्रमोचक राकेट / Launch Vehicle: 
उपग्रह का प्रकार / Type of Satellite: 
निर्माता / Manufacturer: 
स्‍वामी / Owner: 
अनुप्रयोग / Application: 
कक्षा का प्रकार / Orbit Type: