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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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, 4.8 m
Radar Cross Section
10.154 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 IRIDIUM 155
1 43573U 18061E 26304.15970324 .00000079 00000-0 21007-4 0 9994
2 43573 86.3998 359.8328 0002186 96.1175 264.0269 14.34218471432846Epoch: 2026-10-31T03:49Z
TLE epoch observation values (Epoch: 2026-10-31T03:49:58.359Z)
Latitude
-0.00014°
Longitude
-97.12979°
Altitude
780.879 km
Speed
7.463 km/s
True Right ascension
23h 59m 19s
True Declination
0° 00' 01"
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
05:45:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.193 km
Perigee altitude
773.066 km
Semi-major axis
7,152.766 km
Eccentricity
0.00022
Inclination
86.3998°
RAAN
359.8328°
Arg. of periapsis
96.1175°
True anomaly
264.00199°
Mean anomaly
264.0269°
Eccentric anomaly
264.01444°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000021007
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-10-31 16:08:38.481Z | 354.253° N | 2026-10-31 16:12:38.481Z | 218.043° SW | 75.51° | 2026-10-31 16:16:38.481Z | 183.476° SSW |
| 6 mins | 2026-11-01 03:25:38.481Z | 115.594° SE | 2026-11-01 03:27:38.481Z | 84.61° E | 23.711° | 2026-11-01 03:31:38.481Z | 31.768° NE |
| 8 mins | 2026-11-01 05:04:38.481Z | 217.843° SW | 2026-11-01 05:08:38.481Z | 288.163° WNW | 36.507° | 2026-11-01 05:12:38.481Z | 343.318° N |
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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