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 25320.46299005 .00000037 00000-0 60419-5 0 9993
2 43576 86.3968 145.6675 0001751 92.3354 267.8043 14.34217796382884Epoch: 2025-11-16T11:06Z
TLE epoch observation values (Epoch: 2025-11-16T11:06:42.340Z)
Latitude
0.00006°
Longitude
-76.78634°
Altitude
780.766 km
Speed
7.463 km/s
True Right ascension
09h 42m 40s
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
05:45:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
775.884 km
Perigee altitude
773.379 km
Semi-major axis
7,152.768 km
Eccentricity
0.00018
Inclination
86.3968°
RAAN
145.6675°
Arg. of periapsis
92.3354°
True anomaly
267.78425°
Mean anomaly
267.8043°
Eccentric anomaly
267.79427°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.0000060419
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-11-17 12:20:40.258Z | 147.506° SSE | 2025-11-17 12:24:40.258Z | 90.97° ESE | 30.188° | 2025-11-17 12:28:40.258Z | 25.39° NE |
| 7 mins | 2025-11-17 14:02:40.258Z | 237.276° WSW | 2025-11-17 14:05:40.258Z | 281.444° WNW | 22.464° | 2025-11-17 14:09:40.258Z | 334.257° NNW |
| 8 mins | 2025-11-18 00:32:40.258Z | 0.218° NNE | 2025-11-18 00:35:40.258Z | 26.22° NE | 44.391° | 2025-11-18 00:40:40.258Z | 176.477° 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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