Key statistics
Satellite USA 141 at a glance.
Uptime
9934
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
85.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for USA 141.
Object identification
Identified? True
Debris? False
Object name: USA 141
International designator: 1998-055C
Object number (NORAD): 25615
Object ID (CCSDS): 25615
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 99.51 minutes
Inclination: 84.9848 deg
SMA: 7113.299 km
Apoapsis: 741.927 km
Periapsis: 728.402 km
RAAN: 118.0937 deg
Eccentricy: 0.00095069
Argument of periapsis: 95.5038 deg
Mean anomaly: 264.7248 deg
Mean motion: 14.47092003 rev/day
Mean motion (dot): 0.00000697 rev/day2
B* drag term: 0.0001856387 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 2:42 p.m. UTC
TLE line 0: 0 USA 141
TLE line 1: 1 25615U 98055C 25347.61266099 .00000697 00000-0 18564-3 0 9995
TLE line 2: 2 25615 84.9848 118.0937 0009507 95.5038 264.7248 14.47092003347199
Live tracking on map
Real-time ground track for satellite USA 141.
In-orbit conjunctions
There are no conjunctions computed for USA 141, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
The STEX (Space Technology Experiments) satellite carried 29 new technologies intended to result in lower cost and higher performance spacecraft for future missions.
USA 141 was lifted into orbit during the mission ‘Minotaur | NROL-8’, on board a Minotaur space rocket.
The launch took place on Oct. 3, 1998, 10:04 a.m. from Space Launch Complex 576E.
For more information about the launch, click the button.
Minotaur | NROL-8
Agency: N/A
Status: Launch Successful
Launch date: Oct. 3, 1998, 10:04 a.m. UTC
Rocket: Minotaur
Launch pad: Space Launch Complex 576E
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
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