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: 6 hours ago
TLE from 6 hours ago
0 IRIDIUM 156
1 43576U 18061H 26034.16188133 .00000147 00000-0 45552-4 0 9994
2 43576 86.3971 112.7925 0002175 90.7138 269.4307 14.34217347394161Epoch: 2026-02-03T03:53Z
TLE epoch observation values (Epoch: 2026-02-03T03:53:06.546Z)
Latitude
-0.00005°
Longitude
-78.83156°
Altitude
780.735 km
Speed
7.463 km/s
True Right ascension
07h 31m 10s
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
11:39:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.189 km
Perigee altitude
773.077 km
Semi-major axis
7,152.77 km
Eccentricity
0.00022
Inclination
86.3971°
RAAN
112.7925°
Arg. of periapsis
90.7138°
True anomaly
269.40578°
Mean anomaly
269.4307°
Eccentric anomaly
269.41824°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000045552
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-02-03 16:11:47.796Z | 35.291° NE | 2026-02-03 16:14:47.796Z | 74.954° E | 19.277° | 2026-02-03 16:17:47.796Z | 116.264° SE |
| 7 mins | 2026-02-03 17:52:47.796Z | 333.422° NNW | 2026-02-03 17:55:47.796Z | 274.829° WNW | 34.297° | 2026-02-03 17:59:47.796Z | 207.679° SW |
| 8 mins | 2026-02-04 05:07:47.796Z | 149.234° SSE | 2026-02-04 05:10:47.796Z | 101.323° ESE | 33.635° | 2026-02-04 05:15:47.796Z | 17.898° NNE |
| 6 mins | 2026-02-04 06:49:47.796Z | 248.915° W | 2026-02-04 06:51:47.796Z | 276.873° WNW | 19.235° | 2026-02-04 06:55:47.796Z | 329.136° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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