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Main Chapters
Alphabetical Index
Country of Origin
Designation Numbers
First in History
Footprint Maps
Glossary
Launch Vehicles
Satellites Missions
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Launch Schedule
The Clarke Belt
The Satellite Encyclopedia
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Satellite Fact Sheet
IRS 1B
General
Designation
21688 / 91061A
Launch date
29 Aug 1991
Country of origin
India
Mission
Remote sensing
Perigee/Apogee
890/917 km
Inclination
99.1°
Period
103.1 min
Launch vehicle
Semiorka
A1
Operated successfully over 10 years.
External resources
sat-index articles
Technical data
Specifications
Payload
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