GPS BII-09, SVN 15 - Norad ID: 20830
| Spacetrack Directory Name | NAVSTAR 21 (USA 64) |
| Alternative name | GPS BII-09, SVN 15 |
| Orbit launches |
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| Deorbitation |
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| Country/organisation of origin | USA (US) |
| Starting point | AFETR (Kennedy Space Center/Cape Canaveral, USA) |
| Perigee | 21314 km |
| Apogee | 21440 km |
NAVSTAR 21 (USA 64), 20830 is a payload satellite owned by USAF SSD (US) in MEO that was launched on Mon, 01 Oct 1990 UTC via a DELTA 6925 launch vehicle from the Air Force Eastern Test Range (AFETR). 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 NAVSTAR 21 (USA 64) Date of exalting 01.10.1990y.