IRS-1B
Mission information
Status
Active
The satellite is in orbit
The network has not received data from this satellite for a long time
The satellite is in orbit
The network has not received data from this satellite for a long time
Orbital parameters of the satellite
Perigee
880.17 km
Apogee
917.03 km
Inclination
99.4°
Period
104.4 min
Semi-major axis
7276.7 km
Velocity
7.41 km/s
Mission timeline
Launch time
1991-08-29 00:00:00
Decayed time
Transmitters
Telemetry decoder IRS-1B
Decoder name
Decoder fields
Data for the last 30 days
Orbital Elements
Last two-line elements (TLE)
TLE source
Celestrak (SatNOGS)
TLE updated
2025-09-01 15:52:24
Two-line elements (TLE)
1 21688U 91061A 25244.22319465 .00000142 00000+0 13330-3 0 9990
2 21688 99.4060 240.0459 0025315 68.8941 302.1787 13.97812961628125