Key statistics
Satellite NNSS 20 (TRANSIT 20) at a glance.
Uptime
18824
Days in orbit
Revolutions
≈ 13.7
Per day
Orbit
LEO
Low Earth Orbit
Inclination
89.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for NNSS 20 (TRANSIT 20).
Object identification
Identified? True
Debris? False
Object name: NNSS 20 (TRANSIT 20)
International designator: 1973-081A
Object number (NORAD): 6909
Object ID (CCSDS): 6909
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 105.007 minutes
Inclination: 89.8461 deg
SMA: 7372.905 km
Apoapsis: 1108.748 km
Periapsis: 880.792 km
RAAN: 258.4361 deg
Eccentricy: 0.015459
Argument of periapsis: 1.1479 deg
Mean anomaly: 359.0008 deg
Mean motion: 13.71338966 rev/day
Mean motion (dot): 0.0000016 rev/day2
B* drag term: 0.00015399 1/REarth
Two-line elements (TLE)
Creation date: May 12, 2025, 7:41 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 12, 2025, 2:39 p.m. UTC
TLE line 0: 0 NNSS 20 (TRANSIT 20)
TLE line 1: 1 06909U 73081A 25132.61105145 .00000160 00000-0 15399-3 0 9996
TLE line 2: 2 06909 89.8461 258.4361 0154590 1.1479 359.0008 13.71338966774265
Live tracking on map
Real-time ground track for satellite NNSS 20 (TRANSIT 20).
In-orbit conjunctions
There are no conjunctions computed for NNSS 20 (TRANSIT 20), at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
NNSS 20 (TRANSIT 20) was lifted into orbit during the mission ‘Scout A-1 | Transit-O 20’, on board a Scout A-1 space rocket.
The launch took place on Oct. 30, 1973, 12:37 a.m. from Space Launch Complex 5.
For more information about the launch, click the button.
Scout A-1 | Transit-O 20
Agency: N/A
Status: Launch Successful
Launch date: Oct. 30, 1973, 12:37 a.m. UTC
Rocket: Scout A-1
Launch pad: Space Launch Complex 5
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
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