USA 254, 40100
Orbit data source: Space-Track
USA 254, 40100 is a payload satellite owned by USAF AFSPC (US) in GEO that was launched on Mon, 28 Jul 2014 UTC via a DELTA 4M+(4,2) launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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40100 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
OSC
Mission
Non-operational Defense Classified
Bus & Motor
GEOSTAR-1, AOCS
Mass
500 kg wet, 500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
7.621 m²
Expand to show TLE details & historyLast TLE update: 2 weeks ago
TLE from 2 weeks ago
0 USA 254
1 40100U 14043B 25231.45435177 -.00000248 00000-0 00000+0 0 9990
2 40100 3.9298 79.9238 0000522 218.0601 149.6016 0.99131065 24583Epoch: 2025-08-19T10:54Z
TLE epoch observation values (Epoch: 2025-08-19T10:54:15.992Z)
Latitude
0.51613°
Longitude
-44.03209°
Altitude
36,110.793 km
Speed
3.063 km/s
True Right ascension
05h 50m 19s
True Declination
0° 30' 56"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:17:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,112.716 km
Perigee altitude
36,108.28 km
Semi-major axis
42,488.635 km
Eccentricity
0.00005
Inclination
3.9298°
RAAN
79.9238°
Arg. of periapsis
218.0601°
True anomaly
149.60463°
Mean anomaly
149.6016°
Eccentric anomaly
149.60311°
Mean motion
0.24782 °/min
Orbital period
1,452.68 mins
BSTAR
0
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Other satellites on launch #43 in the year 2014 (2014-07-28 UTC)
USA 254 Visibility forecast
Observer location: undefined°, undefined°
Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2025-08-30 02:43:47.627Z | 155.254° SSE | 2025-08-30 18:58:47.627Z | 156.289° SSE | 35.613° | 2025-08-31 02:43:47.627Z | 160.84° S |
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40100 neighbors
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Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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