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OPS 6157 (DSP 4) (06691)
COSPAR: 1973-040A | Alt Name: DSP F4
Image
Additional Sources
Launch Details
Launch Date
June 12, 1973
Launch Site
Launch Pad
LC40
Launch Vehicle
Titan IIIC
Orbital Elements
NORAD ID
06691
International Designator
1973-040A
Epoch
Mon, 20 Jul 2026 19:44:37 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
0.86°
Right Ascension
216.13°
Eccentricity
Calculating...
Argument of Perigee
69.38°
Period
1442.55 min
Mean Motion
1.00 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
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Basic Satellite Info
Name
OPS 6157 (DSP 4)
Alternative Name
DSP F4
Type
Payload
Status
Non-operational
Owner
SAMSO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 06691U 73040A 26201.82265428 -.00000274 00000+0 00000+0 0 9996
2 06691 0.8578 216.1333 0005531 69.3819 261.0902 00.99823430 26276
Source: Celestrak
Summary
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Physical Characteristics
Length
6.9
Diameter
2.8
Span
7.4
Dry Mass
930
Launch Mass
966
Shape
Cyl + 4 Pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
DSP 2
Purpose
Early Warning
Mission
Early Warning
Manufacturer
TRW
Life Expectancy
1.25 years
Bus
DSP
Configuration
Unknown
Motor
MRE-4
Equipment
?
Power System
4 deployable fixed solar arrays, 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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