Starlink Constellation Size Hits 9,931, X Report 7 Mar 2026
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NNSS 20 (TRANSIT 20) (06909)
COSPAR: 1973-081A | Alt Name: NNS 30200-16
Image
Additional Sources
Launch Details
Launch Date
October 30, 1973
Launch Site
AFWTR
Launch Pad
SLC5
Launch Vehicle
Scout A-1
Orbital Elements
NORAD ID
06909
International Designator
1973-081A
Epoch
Sun, 19 Jul 2026 16:57:38 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
89.86°
Right Ascension
251.79°
Eccentricity
Calculating...
Argument of Perigee
140.97°
Period
104.99 min
Mean Motion
13.72 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
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Basic Satellite Info
Name
NNSS 20 (TRANSIT 20)
Alternative Name
NNS 30200-16
Type
Payload
Status
Unknown
Owner
NAVAIR
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 06909U 73081A 26200.70670031 .00000077 00000+0 66879-4 0 9990
2 06909 89.8610 251.7930 0156050 140.9747 220.2800 13.71519185833621
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
0.3
Diameter
0.5
Span
30
Dry Mass
64
Launch Mass
64
Shape
Oct Cyl + 4 Pan + Ant
Radar Cross Section
1.2826
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
NNS O-20
Purpose
Navigation
Mission
Navigation
Manufacturer
RCA
Life Expectancy
Unknown
Bus
Transit 5
Configuration
Transit-Bus, Gravity Stabilized
Motor
?
Equipment
?
Power System
4 deployable fixed 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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