Norad ID: 20438
| Spacetrack Directory Name | UOSAT 4 (UO-15) |
| Orbit launches |
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| Deorbitation |
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| Country/organisation of origin | Anglia (UK) |
| Starting point | FRGUI (Guiana Space Centre, French Guiana) |
| WWW | Here |
| Perigee | 780 km |
| Apogee | 796 km |
OSCAR 15 (UOSAT 4), 20438 is a payload satellite owned by SSTL (UK) in SSO that was launched on Mon, 22 Jan 1990 UTC via an ARIANE 40 launch vehicle from the French Guiana (FRGUI). 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 UOSAT 4 (UO-15) Date of exalting 22.01.1990y.