IRNSS-1F
Indian navigation satellite
From Wikipedia, the free encyclopedia
IRNSS-1F is the sixth navigation satellite out of seven in the Indian Regional Navigational Satellite System (IRNSS) series of satellites after IRNSS-1A, IRNSS-1B, IRNSS-1C, IRNSS-1D and IRNSS-1E. The satellite is one among the seven of the IRNSS constellation of satellites launched to provide navigational services to the region.[4]
| |
| Mission type | Navigation |
|---|---|
| Operator | ISRO |
| COSPAR ID | 2016-015A |
| SATCAT no. | 41384[1] |
| Website | http://www.isro.gov.in/Spacecraft/irnss-1f |
| Mission duration | Planned: 12 years Elapsed: 10 years, 15 days |
| Spacecraft properties | |
| Spacecraft | IRNSS-1F |
| Spacecraft type | Satellite |
| Bus | I-1K |
| Manufacturer | ISRO Satellite Centre Space Applications Centre |
| Launch mass | 1,425 kilograms (3,142 lb) |
| Dry mass | 598 kilograms (1,318 lb) |
| Power | 1660 W |
| Start of mission | |
| Launch date | 10:31, March 10, 2016 (UTC) |
| Rocket | PSLV-XL C32 |
| Launch site | Satish Dhawan Second |
| Contractor | ISRO |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sub-Geosynchronous Transfer Orbit (sub-GTO)[2] |
| Perigee altitude | 35,708 km (22,188 mi)[3] |
| Apogee altitude | 35,862 km (22,284 mi)[3] |
| Inclination | 32.5 deg E |
Launch
Spacecraft
The satellite carries two types of payloads. The navigation payload transmit navigation service signals to users and ranging payload consists of C-band transponder that facilitates accurate determination of the range of the satellite.[4]
It carries Corner Cube Retro Reflectors for laser ranging.[7]
IRNSS-1F has a 12-year mission life.[2] According to a press release by ISRO on 13th May 2026, the satellite's imported atomic clock was decommissioned. The satellite will be used to provide one way broadcast messaging services from thereon.[8]
