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NAVSTAR 50 (USA 156) (26690)
COSPAR: 2001-004A | Alt Name: GPS IIR-7
Image
Additional Sources
Launch Details
Launch Date
January 30, 2001
Launch Site
Launch Pad
SLC17A
Launch Vehicle
Delta 7925-9.5
Orbital Elements
NORAD ID
26690
International Designator
2001-004A
Epoch
Sat, 04 Jul 2026 21:27:16 GMT
Apogee
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Perigee
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Inclination
55.23°
Right Ascension
32.11°
Eccentricity
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Argument of Perigee
31.27°
Period
751.61 min
Mean Motion
1.92 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 50 (USA 156)
Alternative Name
GPS IIR-7
Type
Payload
Status
Non-operational
Owner
AFSMC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 26690U 01004A 26185.89393692 -.00000060 00000+0 00000+0 0 9994
2 26690 55.2313 32.1075 0003201 31.2747 328.3763 01.91588212183878
Source: Celestrak
Summary
NAVSTAR 50 (USA 156), also known as GPS IIR-7, is a navigation satellite launched by the United States on January 30, 2001, from Cape Canaveral Air Force Station's SLC17A pad using a Delta 7925-9.5 launch vehicle. The spacecraft has dimensions of 1.5 meters in length and 1.9 meters in diameter with a span of 19.3 meters. It had a launch mass of 1077 kg and a dry mass of 910 kg. Manufactured by LMMS, the satellite is part of the GPS SVN 54 constellation and uses two deployable solar arrays and batteries for power. Its operational lifespan was projected to be 10 years. The satellite's configuration is AS-4000, and it has a shape described as Box + 2 Pan with an RCS (Reflective Cross Section) of 2.5119 square meters. It operates under the ownership of AFSMC for navigation purposes.
Physical Characteristics
Length
1.5
Diameter
1.9
Span
19.3
Dry Mass
910
Launch Mass
1077
Shape
Box + 2 Pan
Radar Cross Section
2.5119
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
GPS SVN 54
Purpose
Navigation
Mission
Navigation
Manufacturer
LMMS
Life Expectancy
10 years
Bus
Series 4000
Configuration
AS-4000
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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