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UOSAT 4 (UO-15) (20438)
COSPAR: 1990-005C | Alt Name: UoSAT-OSCAR-15
Image
Additional Sources
Launch Details
Launch Date
January 22, 1990
Launch Site
FRGUI
Launch Pad
ELA2
Launch Vehicle
Ariane 40
Orbital Elements
NORAD ID
20438
International Designator
1990-005C
Epoch
Sat, 04 Jul 2026 03:47:52 GMT
Apogee
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Perigee
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Inclination
98.78°
Right Ascension
241.98°
Eccentricity
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Argument of Perigee
305.51°
Period
100.58 min
Mean Motion
14.32 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
UOSAT 4 (UO-15)
Alternative Name
UoSAT-OSCAR-15
Type
Payload
Status
Non-operational
Owner
SSTL
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 20438U 90005C 26185.15824325 .00000075 00000-0 45174-4 0 9990
2 20438 98.7830 241.9755 0008821 305.5070 76.6801 14.31724205902655
Source: Celestrak
Summary
UOSAT 4 (UO-15), also known as UoSAT-OSCAR-15, is a microsatellite launched on January 22, 1990, from the Guiana Space Centre using an Ariane 40 launch vehicle. It was designed and manufactured by SSTL in the UK with a configuration of Microsat-70. The satellite has dimensions of 0.6 meters in length, 0.4 meters in diameter, and spans up to 6.5 meters when deployed. UOSAT 4 weighs 47 kilograms at launch and its dry mass is also 47 kg. Its mission includes radio amateur communication, earth observation, and technology demonstration. The satellite's power system consists of solar cells and batteries. It has a shape described as "Box + Ant" and a radar cross-section (RCS) of 0.2946 square meters.
Physical Characteristics
Length
0.6
Diameter
0.4
Span
6.5
Dry Mass
47
Launch Mass
47
Shape
Box + Ant
Radar Cross Section
0.2946
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
UoSAT 4
Purpose
Radio amateur communication, earth observation, technology
Mission
Radio amateur communication, earth observation, technology
Manufacturer
SSTL
Life Expectancy
Unknown
Bus
UoSAT
Configuration
Microsat-70
Motor
None
Equipment
Unknown
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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