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 25278.22318493 .00000217 00000-0 18628-3 0 9996
2 21688 99.4092 274.8710 0024160 338.5739 32.5086 13.97822319632875
Epoch: Oct 5, 2025 •
Age: 7 hours
Current Status
Altitude 924.8 km
Velocity 7.39 km/s
Sub-Earth Point 51.30°N,
99.15°W
Launch Date Aug 29, 1991
Age 34.1 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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