AEHF 4 (USA 288), 43651
Orbit data source: Space-Track
AEHF 4 (USA 288), 43651 is a payload satellite owned by USAF MCSW (US) in GEO that was launched on Wed, 17 Oct 2018 UTC via an ATLAS V 551 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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43651 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
LMSS
Mission
Operational Defense Communications
Bus & Motor
A2100M, BT-4/AJ-EP?
Mass
6,200 kg wet, ~4,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 13.5 m
Radar Cross Section
35.027 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 AEHF 4 (USA 288)
1 43651U 18079A 26048.45242459 -.00000268 00000-0 00000+0 0 9995
2 43651 1.4251 353.4063 0063433 358.8810 250.3187 1.00265483 27093Epoch: 2026-02-17T10:51Z
TLE epoch observation values (Epoch: 2026-02-17T10:51:29.484Z)
Latitude
-1.30767°
Longitude
-68.36727°
Altitude
35,878.684 km
Speed
3.068 km/s
True Right ascension
16h 07m 45s
True Declination
-1° 18' 23"
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
21:32:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,056.913 km
Perigee altitude
35,521.95 km
Semi-major axis
42,167.568 km
Eccentricity
0.00634
Inclination
1.4251°
RAAN
353.4063°
Arg. of periapsis
358.881°
True anomaly
249.63612°
Mean anomaly
250.3187°
Eccentric anomaly
249.97722°
Mean motion
0.25065 °/min
Orbital period
1,436.24 mins
BSTAR
0
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Other satellites on launch #79 in the year 2018 (2018-10-17 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.AEHF 4 (USA 288) 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 | 2026-02-17 18:41:38.819Z | 129.732° SE | 2026-02-18 00:44:38.819Z | 128.174° SE | 27.091° | 2026-02-18 18:41:38.819Z | 129.727° SE |
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43651 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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