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, 4.8 m
Radar Cross Section
10.154 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 IRIDIUM 155
1 43573U 18061E 25304.61918917 .00000131 00000-0 39758-4 0 9995
2 43573 86.3978 152.2336 0002011 83.3691 276.7734 14.34220895380590Epoch: 2025-10-31T14:51Z
TLE epoch observation values (Epoch: 2025-10-31T14:51:37.944Z)
Latitude
0.00002°
Longitude
-110.83552°
Altitude
780.538 km
Speed
7.464 km/s
True Right ascension
10h 08m 56s
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
08:20:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.06 km
Perigee altitude
773.183 km
Semi-major axis
7,152.758 km
Eccentricity
0.0002
Inclination
86.3978°
RAAN
152.2336°
Arg. of periapsis
83.3691°
True anomaly
276.75052°
Mean anomaly
276.7734°
Eccentric anomaly
276.76196°
Mean motion
3.58784 °/min
Orbital period
100.34 mins
BSTAR
0.000039758
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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 | 2025-11-01 14:24:33.433Z | 176.217° S | 2025-11-01 14:29:33.433Z | 50.584° ENE | 44.185° | 2025-11-01 14:33:33.433Z | 5.614° NNE |
| 5 mins | 2025-11-02 00:57:33.433Z | 48.487° ENE | 2025-11-02 00:59:33.433Z | 77.773° E | 18.999° | 2025-11-02 01:02:33.433Z | 117.617° SE |
| 8 mins | 2025-11-02 02:36:33.433Z | 339.387° N | 2025-11-02 02:40:33.433Z | 268.976° W | 34.657° | 2025-11-02 02:44:33.433Z | 206.144° SW |
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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