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: 12 hours ago
TLE from 12 hours ago
0 IRIDIUM 155
1 43573U 18061E 25352.48040002 .00000248 00000-0 81631-4 0 9990
2 43573 86.3980 132.2379 0001991 98.9101 261.2320 14.34217816387453Epoch: 2025-12-18T11:31Z
TLE epoch observation values (Epoch: 2025-12-18T11:31:46.561Z)
Latitude
-0.00006°
Longitude
-128.04141°
Altitude
780.935 km
Speed
7.463 km/s
True Right ascension
08h 48m 57s
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
22:05:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.056 km
Perigee altitude
773.207 km
Semi-major axis
7,152.768 km
Eccentricity
0.0002
Inclination
86.398°
RAAN
132.2379°
Arg. of periapsis
98.9101°
True anomaly
261.20945°
Mean anomaly
261.232°
Eccentric anomaly
261.22073°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000081631
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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 | 2025-12-19 09:24:20.076Z | 152.131° SSE | 2025-12-19 09:29:20.076Z | 76.859° E | 31.655° | 2025-12-19 09:33:20.076Z | 20.869° NNE |
| 6 mins | 2025-12-19 11:07:20.076Z | 244.535° WSW | 2025-12-19 11:10:20.076Z | 290.397° WNW | 20.931° | 2025-12-19 11:13:20.076Z | 329.219° NNW |
| 8 mins | 2025-12-19 21:36:20.076Z | 357.661° N | 2025-12-19 21:40:20.076Z | 179.652° S | 44.806° | 2025-12-19 21:44:20.076Z | 179.057° S |
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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