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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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Identifier
43651, 2018-079A
Orbit
GEO
Last TLE update
20 hours ago
Origin
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)
2018-10-17 (7 years ago)
Launch vehicle
ATLAS V 551
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Box + 2 Pan, 27 m
Radar Cross Section
35.027 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 20 hours ago
0 AEHF 4 (USA 288)
1 43651U 18079A   25181.55458796 -.00000275  00000-0  00000+0 0  9994
2 43651   1.4675 347.1159 0047034   4.5999  59.2654  1.00273850 24764
Epoch: 2025-06-30T13:18Z
TLE epoch observation values (Epoch: 2025-06-30T13:18:36.399Z)
Latitude
1.33392°
Longitude
-67.06578°
Altitude
35,685.544 km
Speed
3.082 km/s
True Right ascension
03h 25m 47s
True Declination
1° 19' 57"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
0.05247°
Longitude
-129.01632°
Altitude
35,588.058 km
Speed
3.089 km/s
Apparent Right ascension
23h 35m 56s
Apparent Declination
-6° 01' 33"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
20:47:40
Azimuth
129.756° SE
Elevation
29.927°
Doppler factor
1
Orbital elements
Apogee altitude
35,985.405 km
Perigee altitude
35,588.766 km
Semi-major axis
42,165.222 km
Eccentricity
0.0047
Inclination
1.4675°
RAAN
347.1159°
Arg. of periapsis
4.5999°
True anomaly
Unknown
Mean anomaly
59.2654°
Eccentric anomaly
Unknown
Mean motion
0.25068 °/min
Orbital period
1,436.12 mins
BSTAR
0
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43651 neighbors
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AEHF 4 (USA 288) 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 mins2025-07-01 09:09:26.121Z129.77° SE2025-07-01 15:08:26.121Z128.121° SE27.138°2025-07-02 09:09:26.121Z129.738° SE
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