UFO 11 (USA 174), 28117
Orbit data source: Space-Track
UFO 11 (USA 174), 28117 is a payload satellite owned by USN PMW 146 (US) in GEO that was launched on Thu, 18 Dec 2003 UTC via an ATLAS 3B 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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28117 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Boeing/ES
Mission
Operational Defense Communications
Bus & Motor
HS-601, R-4D-11-300
Mass
~3,205 kg wet, ~1,350 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 13.1 m
Radar Cross Section
49.326 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 UFO 11 (USA 174)
1 28117U 03057A 26093.90594263 -.00000103 00000-0 00000-0 0 9997
2 28117 8.8963 34.1846 0003030 320.9375 238.6757 1.00272211 81706Epoch: 2026-04-03T21:44Z
TLE epoch observation values (Epoch: 2026-04-03T21:44:33.443Z)
Latitude
-2.97486°
Longitude
75.19177°
Altitude
35,793.143 km
Speed
3.074 km/s
True Right ascension
15h 34m 15s
True Declination
-2° 58' 19"
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
19:00:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,800.285 km
Perigee altitude
35,774.732 km
Semi-major axis
42,165.645 km
Eccentricity
0.0003
Inclination
8.8963°
RAAN
34.1846°
Arg. of periapsis
320.9375°
True anomaly
238.64605°
Mean anomaly
238.6757°
Eccentric anomaly
238.66087°
Mean motion
0.25067 °/min
Orbital period
1,436.14 mins
BSTAR
0
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Other satellites on launch #57 in the year 2003 (2003-12-18 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.UFO 11 (USA 174) 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. |
|---|---|---|---|---|---|---|---|
| UFO 11 (USA 174) is likely not visible in the next few days. |
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28117 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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