Norad ID: 21688
| Spacetrack Directory Name | IRS-1B |
| Orbit launches |
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| Deorbitation |
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| Country/organisation of origin | Indie (IND) |
| Starting point | TYMSC (Baikonur Cosmodrome, Kazakhstan) |
| Perigee | 885 km |
| Apogee | 921 km |
IRS 1B, 21688 is a payload satellite owned by ISRO (IN) in SSO that was launched on Thu, 29 Aug 1991 UTC via a VOSTOK 8A92M launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). Payloads include a variety of satellites, spacecraft, and rockets equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
satellite IRS-1B Date of exalting 29.08.1991y.