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
881.22 km
Apogee
916.09 km
Inclination
99.4°
Period
104.4 min
Semi-major axis
7276.8 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
2025-07-13 05:34:03
Two-line elements (TLE)
1 21688U 91061A 25193.72058843 .00000108 00000+0 10921-3 0 9993
2 21688 99.3995 188.3383 0023960 203.4415 330.8291 13.97797333621067