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GSAT-1

GSAT-1 was ISRO's first experimental satellite launched by GSLV. The 1,530-kilogram spacecraft carried C-band and S-band transponders for digital audio, internet, and compressed television experiments while testing new spacecraft technologies including improved thrusters, faster star-sensor recovery, and heat-pipe radiator panels.

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Identity

Aliases
GSLV-D1 payload2001-015A
Name
GSAT-1
Status
completed

Details

Astronauts
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Description
GSAT-1 was ISRO's first experimental satellite launched by GSLV. The 1,530-kilogram spacecraft carried C-band and S-band transponders for digital audio, internet, and compressed television experiments while testing new spacecraft technologies including improved thrusters, faster star-sensor recovery, and heat-pipe radiator panels.
Destination
Near-geosynchronous Earth orbit at approximately 33,806 km perigee and 35,665 km apogee with 0.997° inclination after orbit raising; communications experiments and spacecraft-element tests were conducted, but a propellant shortfall prevented the intended geostationary orbit
Launch Site
Outcome
GSLV-D1 placed GSAT-1 into a geosynchronous transfer orbit, establishing the first flight of India's GSLV and enabling the experimental communications spacecraft to begin orbital operations and technology tests.
Programs
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Start Date
2001-04-18
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Creation Time
July 18, 2026 at 18:48:36 UTC
Updated Time
August 24, 2026 at 14:27:54 UTC

Other

Affiliations
Search Name
GSAT-1 GSLV-D1 payload 2001-015A
Space Stations
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