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NAVSTAR 28 (USA 85) (22231)
COSPAR: 1992-079A | Alt Name: GPS IIA-7
Image
Additional Sources
Launch Details
Launch Date
November 22, 1992
Launch Site
Launch Pad
LC17A
Launch Vehicle
Delta 7925
Orbital Elements
NORAD ID
22231
International Designator
1992-079A
Epoch
Fri, 03 Jul 2026 10:01:04 GMT
Apogee
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Perigee
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Inclination
55.56°
Right Ascension
113.26°
Eccentricity
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Argument of Perigee
4.99°
Period
761.47 min
Mean Motion
1.89 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 28 (USA 85)
Alternative Name
GPS IIA-7
Type
Payload
Status
Non-operational
Owner
AFSMC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 22231U 92079A 26184.41741543 .00000020 00000-0 00000-0 0 9999
2 22231 55.5641 113.2626 0024997 4.9887 355.0295 1.89108644 62442
Source: Celestrak
Summary
NAVSTAR 28 (also known as GPS IIA-7) is a GPS satellite with the OBJECT_ID 1992-079A launched by AFSMC on November 22, 1992, from Launch Pad LC17A at AFETR using a Delta 7925 launch vehicle. It stabilized its orientation through a 3-Axis system and was designed for navigation purposes with a mission lifetime of 7.5 years. The satellite has dimensions of 2.4 meters in length, 1.8 meters in diameter, and a span of 5.3 meters due to deployable solar arrays, which also served as its power source alongside batteries. NAVSTAR 28 had a dry mass of 860 kilograms, the same as its launch mass, and was manufactured by RWISB with a Star 37XFP motor. The spacecraft carries GPS SVN 32 payload for navigation tasks and has an RCS (Reflective Cross Section) value of 3.981 square meters, featuring a box shape with two panels.
Physical Characteristics
Length
2.4
Diameter
1.8
Span
5.3
Dry Mass
860
Launch Mass
860
Shape
Box + 2 Pan
Radar Cross Section
3.981
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
GPS SVN 32
Purpose
Navigation
Mission
Navigation
Manufacturer
RWISB
Life Expectancy
7.5 years
Bus
GPS
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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