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NAVSTAR 22 (USA 66) (20959)
COSPAR: 1990-103A | Alt Name: GPS IIA-1
Image
Additional Sources
Launch Details
Launch Date
November 26, 1990
Launch Site
Launch Pad
LC17A
Launch Vehicle
Delta 7925
Orbital Elements
NORAD ID
20959
International Designator
1990-103A
Epoch
Mon, 29 Jun 2026 09:26:06 GMT
Apogee
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Perigee
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Inclination
56.21°
Right Ascension
51.26°
Eccentricity
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Argument of Perigee
88.70°
Period
765.32 min
Mean Motion
1.88 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
NAVSTAR 22 (USA 66)
Alternative Name
GPS IIA-1
Type
Payload
Status
Non-operational
Owner
AFSSD2
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 20959U 90103A 26180.39313327 -.00000062 00000-0 00000-0 0 9995
2 20959 56.2128 51.2621 0023486 88.6997 271.6358 1.88155390256092
Source: Celestrak
Summary
NAVSTAR 22 (USA 66), also known as GPS IIA-1, is a US satellite operated by AFSSD2 and part of the GPS constellation for navigation purposes. Launched on November 26, 1990, from LC17A at AFETR using a Delta 7925 launch vehicle, it has a 3-Axis stabilized configuration with dimensions of 2.4 meters in length, 1.8 meters in diameter, and a span of 5.3 meters. The satellite features two deployable solar arrays and batteries for power supply, and its dry mass is 860 kilograms. It was manufactured by RWISB and equipped with GPS SVN 23 payload, a Star 37XFP motor, and has an estimated operational lifetime of 7.5 years. Its shape consists of a box with two panels and has a radar cross-section (RCS) value of 1.9952 square meters.
Physical Characteristics
Length
2.4
Diameter
1.8
Span
5.3
Dry Mass
860
Launch Mass
860
Shape
Box + 2 Pan
Radar Cross Section
1.9952
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
GPS SVN 23
Purpose
Navigation
Mission
Navigation
Manufacturer
RWISB
Life Expectancy
7.5 years
Bus
GPS IIA
Configuration
3-Axis stabilized
Motor
Star 37XFP
Equipment
?
Power System
2 deployable solar arrays, 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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