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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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: 3 days ago
TLE from 3 days ago
0 USA 254
1 40100U 14043B 26066.15183859 .00000048 00000-0 00000+0 0 9998
2 40100 4.4521 77.4164 0003315 256.7218 100.1563 0.99129203 26554Epoch: 2026-03-07T03:38Z
TLE epoch observation values (Epoch: 2026-03-07T03:38:38.854Z)
Latitude
-0.2612°
Longitude
-145.17994°
Altitude
36,111.981 km
Speed
3.063 km/s
True Right ascension
04h 57m 26s
True Declination
0° 15' 39"
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
19:37:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,125.113 km
Perigee altitude
36,096.943 km
Semi-major axis
42,489.165 km
Eccentricity
0.00033
Inclination
4.4521°
RAAN
77.4164°
Arg. of periapsis
256.7218°
True anomaly
100.19369°
Mean anomaly
100.1563°
Eccentric anomaly
100.17499°
Mean motion
0.24781 °/min
Orbital period
1,452.7 mins
BSTAR
0
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Other satellites on launch #43 in the year 2014 (2014-07-28 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.USA 254 Visibility forecast
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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 | 2026-03-10 15:25:09.279Z | 246.44° WSW | 2026-03-10 15:25:09.279Z | 246.44° WSW | 18.298° | 2026-03-11 15:25:09.279Z | 249.827° W |
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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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