About IRS-1B
Group: 3 satellites
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Live Position
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Upcoming Passes
Altitude History
Altitude vs Time
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Two-Line Element Set
1 21688U 91061A 26020.95823245 .00000205 00000-0 17712-3 0 9998
2 21688 99.4120 25.2311 0025182 44.6915 18.3397 13.97850247647928
Epoch: Jan 20, 2026 •
Age: 8 hours
Current Status
Altitude 892.5 km
Velocity 7.41 km/s
Sub-Earth Point -4.32°S,
156.62°E
Launch Date Aug 29, 1991
Age 34.3 years
Type other
Technical Details
Classification Payload
Mass 990.00 kg
Dry Mass 960.00 kg
Total Mass 990.00 kg
Length 1.60 m
Diameter 1.10 m
Span 12.00 m
Shape Box + 2 Pan
Manufacturer ISRO
Bus Type IRS
Phase Status In Orbit
Owner/State ISRO/IN
Large Constellations
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