IRIDIUM 155, 43573
Orbit data source: Space-Track
IRIDIUM 155, 43573 is a payload satellite owned by Iridium (US) in LEO that was launched on Wed, 25 Jul 2018 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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43573 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NGIS SSG Gilbert
Mission
Operational Commercial Communications
Bus & Motor
ELITEBUS, Unknown motor
Mass
860 kg wet, 700 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Trap Box + 2 Pan, 4.7 m
Radar Cross Section
14.423 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 IRIDIUM 155
1 43573U 18061E 25258.78127910 .00000076 00000-0 19985-4 0 9994
2 43573 86.4043 171.3610 0002421 86.2311 273.9162 14.34217691374022Epoch: 2025-09-15T18:45Z
TLE epoch observation values (Epoch: 2025-09-15T18:45:02.514Z)
Latitude
0.00003°
Longitude
-104.88048°
Altitude
780.6 km
Speed
7.464 km/s
True Right ascension
11h 25m 26s
True Declination
0° 00' 00"
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
02:15:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.363 km
Perigee altitude
772.9 km
Semi-major axis
7,152.769 km
Eccentricity
0.00024
Inclination
86.4043°
RAAN
171.361°
Arg. of periapsis
86.2311°
True anomaly
273.88852°
Mean anomaly
273.9162°
Eccentric anomaly
273.90236°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000019985
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Other satellites on launch #61 in the year 2018 (2018-07-25 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.IRIDIUM 155 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-16 18:18:11.505Z | 157.371° SSE | 2025-09-16 18:23:11.505Z | 70.595° E | 35.216° | 2025-09-16 18:27:11.505Z | 16.731° NNE |
| 6 mins | 2025-09-16 20:01:11.505Z | 249.48° W | 2025-09-16 20:03:11.505Z | 276.021° WNW | 17.97° | 2025-09-16 20:07:11.505Z | 327.409° NNW |
| 8 mins | 2025-09-17 06:30:11.505Z | 352.323° N | 2025-09-17 06:34:11.505Z | 233.64° WSW | 43.631° | 2025-09-17 06:38:11.505Z | 186.044° SSW |
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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