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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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Iframe URL

https://www.satcat.com/sats-embedded/43651?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

43651, 2018-079A

Orbit

GEO

Country

US

Related business

United States Space Force (US)

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, 13.5 m

Radar Cross Section

35.027 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 AEHF 4 (USA 288)
1 43651U 18079A   25261.22752986 -.00000295  00000-0  00000-0 0  9998
2 43651   1.5099 340.6808 0056561  10.1554  20.8710  1.00269562 25571

Epoch: 2025-09-18T05:27Z

TLE epoch observation values (Epoch: 2025-09-18T05:27:38.579Z)

Latitude

0.77121°

Longitude

-67.36567°

Altitude

35,562.882 km

Speed

3.091 km/s

True Right ascension

00h 47m 44s

True Declination

0° 46' 14"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

19:55:16

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

36,026.785 km

Perigee altitude

35,549.79 km

Semi-major axis

42,166.424 km

Eccentricity

0.00566

Inclination

1.5099°

RAAN

340.6808°

Arg. of periapsis

10.1554°

True anomaly

21.10344°

Mean anomaly

20.871°

Eccentric anomaly

20.98707°

Mean motion

0.25066 °/min

Orbital period

1,436.18 mins

BSTAR

0

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Other satellites on launch #79 in the year 2018 (2018-10-17 UTC)

ATLAS 5 CENTAUR DEB, 44664

ATLAS 5 CENTAUR DEB, 44665

ATLAS 5 CENTAUR DEB, 44666

ATLAS 5 CENTAUR DEB, 44667

ATLAS 5 CENTAUR DEB, 44668

ATLAS 5 CENTAUR DEB, 44669

ATLAS 5 CENTAUR DEB, 44670

ATLAS 5 CENTAUR DEB, 44671

ATLAS 5 CENTAUR DEB, 44672

ATLAS 5 CENTAUR DEB, 44673

ATLAS 5 CENTAUR DEB, 44674

ATLAS 5 CENTAUR DEB, 44675

ATLAS 5 CENTAUR DEB, 44676

ATLAS 5 CENTAUR DEB, 44677

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

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	2025-09-19 03:02:37.942Z	130.123° SE	2025-09-19 09:05:37.942Z	128.108° SE	27.128°	2025-09-20 03:02:37.942Z	130.104° 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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Check out AEHF 4 (USA 288), 43651 on other resources

View AEHF 4 (USA 288), 43651 on NASA - NSSDCA Website

View AEHF 4 (USA 288), 43651 on Heavens-Above

View AEHF 4 (USA 288), 43651 on Keep Track

View AEHF 4 (USA 288), 43651 on Celestrak

View AEHF 4 (USA 288), 43651 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

Documentation

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