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
881.18 km
Apogee
915.95 km
Inclination
99.4°
Period
104.4 min
Semi-major axis
7276.7 km
Velocity
7.39 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
2025-10-12 21:10:33
Two-line elements (TLE)
1 21688U 91061A 25285.47325898 -.00000141 00000+0 -66401-4 0 9998
2 21688 99.4090 282.2980 0023895 317.9393 157.0084 13.97822995633889