USA 255, 40101
Orbit data source: Space-Track
USA 255, 40101 is a payload satellite owned by AFRL/RV (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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40101 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
OSC
Mission
Non-operational Defense Classified
Bus & Motor
ANGELS, AOCS
Mass
70 kg wet, 70 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 0.3 m
Radar Cross Section
0.375 m²
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 USA 255
1 40101U 14043C 26068.81801514 -.00000240 00000-0 00000-0 0 9995
2 40101 9.0038 58.2444 0014420 322.9115 219.5163 0.98729065 24323Epoch: 2026-03-09T19:37Z
TLE epoch observation values (Epoch: 2026-03-09T19:37:56.508Z)
Latitude
-0.35203°
Longitude
138.56381°
Altitude
36,271.638 km
Speed
3.055 km/s
True Right ascension
16h 02m 13s
True Declination
0° 21' 06"
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
13:28:22
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,287.154 km
Perigee altitude
36,164.284 km
Semi-major axis
42,603.856 km
Eccentricity
0.00144
Inclination
9.0038°
RAAN
58.2444°
Arg. of periapsis
322.9115°
True anomaly
219.4113°
Mean anomaly
219.5163°
Eccentric anomaly
219.46379°
Mean motion
0.24681 °/min
Orbital period
1,458.59 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 255 Visibility
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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. |
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| USA 255 is likely not visible in the next few days. |
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40101 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
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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