IRIDIUM 156, 43576
Orbit data source: Space-Track
IRIDIUM 156, 43576 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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43576 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 156
1 43576U 18061H 25304.62553674 .00000125 00000-0 37683-4 0 9992
2 43576 86.3979 152.2829 0001861 81.8869 278.2538 14.34218293380614Epoch: 2025-10-31T15:00Z
TLE epoch observation values (Epoch: 2025-10-31T15:00:46.374Z)
Latitude
-0°
Longitude
-113.07761°
Altitude
780.525 km
Speed
7.464 km/s
True Right ascension
10h 09m 07s
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
08:18:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
775.961 km
Perigee altitude
773.299 km
Semi-major axis
7,152.767 km
Eccentricity
0.00019
Inclination
86.3979°
RAAN
152.2829°
Arg. of periapsis
81.8869°
True anomaly
278.23269°
Mean anomaly
278.2538°
Eccentric anomaly
278.24325°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000037683
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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 156 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 14:34:08.119Z | 183.555° SSW | 2025-11-01 14:38:08.119Z | 209.62° SW | 44.446° | 2025-11-01 14:43:08.119Z | 1.048° NNE |
| 6 mins | 2025-11-02 01:06:08.119Z | 38.408° NE | 2025-11-02 01:09:08.119Z | 85.328° E | 22.21° | 2025-11-02 01:12:08.119Z | 126.107° SE |
| 8 mins | 2025-11-02 02:46:08.119Z | 332.054° NNW | 2025-11-02 02:49:08.119Z | 285.167° WNW | 30.105° | 2025-11-02 02:54:08.119Z | 210.374° 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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