Find IRS-1B
NORAD ID: 21688 • Int'l Des: 1991-061 • Owner: ISRO • Country: IN • operational
LEOCIRCULARRETROGRADESSO
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About IRS-1B
IRS-1B (NORAD 21688) is a satellite launched Aug 29, 1991 by ISRO of IN. It operates in LEO, CIRCULAR, RETROGRADE, SSO orbit with a mass of 990.00 kg.
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Two-Line Element Set
1 21688U 91061A 26195.61355516 .00000284 00000-0 23325-3 0 9999
2 21688 99.4116 204.2438 0023206 289.8425 178.9009 13.97877233672325
Epoch: Jul 14, 2026 •
Age: 6 hours
Current Status
Altitude 911.8 km
Apogee / Perigee N/A
Velocity 7.40 km/s
Sub-Earth Point -75.58°S,
1.13°E
Launch Date Aug 29, 1991
Age 34.8 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
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