UoSAT-4 - Misplaced Pages

Failed British Low Earth Orbit Satellite

UoSAT-4
Spacecraft properties

Mission type	OSCAR
Operator	University of Surrey
COSPAR ID	1990-005C
SATCAT no.	20438


Manufacturer	SSTL


Start of mission
Launch date	22 January 1990, 01:35:27 (1990-01-22UTC01:35:27Z) UTC
Rocket	Ariane 40
Launch site	Kourou ELA-2


Orbital parameters
Reference system	Geocentric
Regime	Sun-synchronous
Perigee altitude	780 km (480 mi)
Apogee altitude	796 km (495 mi)
Inclination	98.8074 degrees
Period	100.6 minutes
Epoch	15 April 2019, 20:59

OSCAR← OSCAR 14 OSCAR 16 →

UoSAT-4, also known as UO-15 and OSCAR-15, is a British satellite in Low Earth Orbit. It was built by a spin-off company of the University of Surrey, Surrey Satellite Technology (SSTL) and launched in January 1990 from French Guiana.

UoSAT-4 was launched on the same rocket as its sister satellite, UoSAT-3.

Mission

UoSAT-4 carried equipment to supplement UoSAT-3, but failed after two days in orbit.

The satellite forms part of the growing amounts of orbital debris orbiting around the Earth. The payload will decay in the Earth's atmosphere some time in the future.

References

^ "Sat Cat". Celestrak. Retrieved 27 June 2012.
^ "UoSat 3, 4, 5 (UO 14, 15, 22 / Oscar 14, 15, 22) / Healthsat 1". Gunter's Space Page. Retrieved 27 June 2012.
"Oscar 15 - Orbit". Heavens-Above. 15 April 2019. Retrieved 16 April 2019.

v t e UoSAT satellites
UoSAT-1 UoSAT-2 UoSAT-3 UoSAT-4 UoSAT-5 UoSAT-12
See also: Surrey Satellite Technology Ltd. (SSTL)

v t e ← 1989 Orbital launches in 1990 1991 →
January	Skynet 4A, JCSAT-2 STS-32 (Leasat 5) Kosmos 2055 Kosmos 2056 SPOT-2, UoSAT-3, UoSAT-4, Pacsat, DOVE, Webersat, LUSat Molniya-3 No.53L Hiten, Hagoromo USA-50) Kosmos 2057 Kosmos 2058
February	Zhongxing 3 Kosmos 2059 Momo 1b, Orizuru, Fuju 1b Soyuz TM-9 USA-51, USA-52 Gran' No.35L Superbird B, BS 2x Nadezhda No.405 Okean-O1 No.5 STS-36 (USA-53) Progress M-3
March	Intelsat 603 Kosmos 2060 Kosmos 2061 Kosmos 2062 USA-54 Kosmos 2063
April	Ofek-2 Unnamed Pegsat, USA-55 Kosmos 2064, Kosmos 2065, Kosmos 2066, Kosmos 2067, Kosmos 2068, Kosmos 2069, Kosmos 2070, Kosmos 2071 AsiaSat 1 USA-56, USA-57, USA-58 Foton No.6L Kosmos 2072 Palapa B2R Kosmos 2073 Kosmos 2074 STS-31 (Hubble) Kosmos 2075 Molniya-1 No.71 Kosmos 2076
May	Progress 42 Kosmos 2077 MacSat 1, MacSat 2 Kosmos 2078 Kosmos 2079, Kosmos 2080, Kosmos 2081 Kosmos 2082 Resurs-F1 No.50 Kristall
June	ROSAT USA-59, USA-60, USA-61, USA-62 INSAT-1D Molniya 3 No.47L Kosmos 2083 Gorizont No.30L Kosmos 2084 Intelsat 604 Meteor-2 No.23
July	Unnamed Gamma Badr-1, Optus-MFS Resurs-F2 No.5 Kosmos 2085 Kosmos 2086 TDF 2, DFS Kopernikus 2 Kosmos 2087 CRRES Kosmos 2088
August	Soyuz TM-10 USA-63 Kosmos 2089 Kosmos 2090, Kosmos 2091, Kosmos 2092, Kosmos 2093, Kosmos 2094, Kosmos 2095 Ekran-M No.14L Molniya-1T No.68 Progress M-4 Resurs-F1 No.49 Marco Polo 2 Kosmos 2096 Kosmos 2097 Yuri 3a Kosmos 2098 Skynet 4C, Eutelsat II F-1 Kosmos 2099
September	Fengyun I-02, Qiqiuweixing 1, Qiqiuweixing 2 Resurs-F1 No.51 Kosmos 2100 Molniya-3 No.54L Progress M-5 Meteor-2 No.25
October	Kosmos 2101 USA-64 Unnamed FSW-1 No.3 STS-41 (Ulysses) SBS 6, Westar 6S Kosmos 2102 Inmarsat-2F1
November	Gorizont No.32L USA-65 Kosmos 2103 STS-38 (USA-67, Prowler) Kosmos 2104 Kosmos 2105 Satcom C1, GStar 4 Molniya 1T No.70 Gorizont No.33L USA-66 Kosmos 2106
December	USA-68 STS-35 Soyuz TM-11 Kosmos 2107 Kosmos 2108 Kosmos 2109, Kosmos 2110, Kosmos 2111 Kosmos 2112 Gran' No.37L Kosmos 2113 Kosmos 2114, Kosmos 2115, Kosmos 2116, Kosmos 2117, Kosmos 2118, Kosmos 2119 Kosmos 2120 Globus No.12
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

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