Key statistics
Satellite AEHF 4 (USA 288) at a glance.
Uptime
2403
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
GEO
Geostationary Orbit
Inclination
1.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for AEHF 4 (USA 288).
Object identification
Identified? True
Debris? False
Object name: AEHF 4 (USA 288)
International designator: 2018-079A
Object number (NORAD): 43651
Object ID (CCSDS): 43651
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1436.007 minutes
Inclination: 1.5012 deg
SMA: 42162.979 km
Apoapsis: 35993.235 km
Periapsis: 35576.454 km
RAAN: 343.4004 deg
Eccentricy: 0.0049425
Argument of periapsis: 7.8099 deg
Mean anomaly: 357.5585 deg
Mean motion: 1.00278038 rev/day
Mean motion (dot): -0.0000026 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: May 15, 2025, 5:33 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 15, 2025, 12:11 p.m. UTC
TLE line 0: 0 AEHF 4 (USA 288)
TLE line 1: 1 43651U 18079A 25135.50820278 -.00000260 00000-0 00000-0 0 9991
TLE line 2: 2 43651 1.5012 343.4004 0049425 7.8099 357.5585 1.00278038 24312
Live tracking on map
Real-time ground track for satellite AEHF 4 (USA 288).
In-orbit conjunctions
There are no conjunctions computed for AEHF 4 (USA 288), at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
This is the fourth satellite in the Advanced Extremely High Frequency (AEHF) system, which is a series of communications satellites operated by the United States Air Force Space Command. It provides global, survivable, protected communications capabilities for strategic command and tactical warfighters operating on ground, sea and air platforms.
AEHF 4 (USA 288) was lifted into orbit during the mission ‘Atlas V 551 | AEHF-4 (USA 288)’, on board a Atlas V 551 space rocket.
The launch took place on Oct. 17, 2018, 4:15 a.m. from Space Launch Complex 41.
For more information about the launch, click the button.

Atlas V 551 | AEHF-4 (USA 288)
Agency: N/A
Status: Launch Successful
Launch date: Oct. 17, 2018, 4:15 a.m. UTC
Rocket: Atlas V 551
Launch pad: Space Launch Complex 41
Location: Cape Canaveral SFS, FL, USA
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Latest news about this satellite
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