GSAT-1
| Mission type | Communications Technology |
|---|---|
| Operator | ISRO |
| COSPAR ID | 2001-015A |
| SATCAT no. | 26745 |
| Mission duration | Failed to reach orbit |
| Spacecraft properties | |
| Bus | I-2K |
| Manufacturer | ISRO |
| Launch mass | 1,540 kilograms (3,400 lb) |
| Start of mission | |
| Launch date | 18 April 2001, 10:13 UTC |
| Rocket | GSLV Mk.I |
| Launch site | Shiharikota FLP |
| Contractor | ISRO |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth Geostationary planned |
| Longitude | 73° west (2000) 99° west (2000–2006) 76.85° west (2006–2009) |
| Perigee altitude | 33,800 kilometres (21,000 mi) |
| Apogee altitude | 35,725 kilometres (22,198 mi) |
| Inclination | 0.9 degrees |
| Period | 1384.09 minutes |
| Epoch | 25 April 2001 |
| Transponders | |
| Band | 3 C-band 2 S-band |
GSAT-1 was an experimental communications satellite launched aboard the maiden flight of the GSLV rocket. The spacecraft was equipped with instrumentation to test Pulse-code modulation (PCM) transmitting on S-band frequencies and transponders operating in the C-band. The spacecraft was unable to complete its mission after a launch failure left it in a lower than planned orbit and propulsion issues prevented the satellite from correcting this via its own maneuvering system.