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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
43651 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
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: 21 hours ago
TLE from 21 hours ago
0 AEHF 4 (USA 288)
1 43651U 18079A 25242.19836488 -.00000269 00000-0 00000-0 0 9994
2 43651 1.5249 339.1861 0056560 12.5335 350.6451 1.00277249 25377Epoch: 2025-08-30T04:45Z
TLE epoch observation values (Epoch: 2025-08-30T04:45:38.725Z)
Latitude
0.07349°
Longitude
-67.79119°
Altitude
35,548.381 km
Speed
3.092 km/s
True Right ascension
22h 49m 01s
True Declination
0° 04' 24"
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
16:55:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,024.614 km
Perigee altitude
35,547.652 km
Semi-major axis
42,164.27 km
Eccentricity
0.00566
Inclination
1.5249°
RAAN
339.1861°
Arg. of periapsis
12.5335°
True anomaly
350.53901°
Mean anomaly
350.6451°
Eccentric anomaly
350.59213°
Mean motion
0.25068 °/min
Orbital period
1,436.07 mins
BSTAR
0
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #79 in the year 2018 (2018-10-17 UTC)
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 mins | 2025-08-31 01:18:29.405Z | 131.338° SE | 2025-08-31 10:19:29.405Z | 128.154° SE | 27.171° | 2025-09-01 01:18:29.405Z | 131.302° SE |
Loading historical data...
43651 neighbors
Authenticating...
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 ascending order |
|---|
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
|---|
Authenticating...
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 ascending order |
|---|