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, 4.7 m
Radar Cross Section
14.423 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 IRIDIUM 156
1 43576U 18061H 25260.88067739 .00000009 00000-0 -37388-5 0 9998
2 43576 86.4045 170.5364 0002567 84.4130 275.7359 14.34217860374345Epoch: 2025-09-17T21:08Z
TLE epoch observation values (Epoch: 2025-09-17T21:08:10.526Z)
Latitude
0.00002°
Longitude
-143.55773°
Altitude
780.535 km
Speed
7.464 km/s
True Right ascension
11h 22m 08s
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
04:20:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.467 km
Perigee altitude
772.795 km
Semi-major axis
7,152.768 km
Eccentricity
0.00026
Inclination
86.4045°
RAAN
170.5364°
Arg. of periapsis
84.413°
True anomaly
275.70663°
Mean anomaly
275.7359°
Eccentric anomaly
275.72127°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
-0.0000037388
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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 | 2025-09-18 17:22:06.461Z | 117° SE | 2025-09-18 17:25:06.461Z | 80.958° E | 16.062° | 2025-09-18 17:28:06.461Z | 43.725° NE |
| 8 mins | 2025-09-18 19:02:06.461Z | 205.832° SW | 2025-09-18 19:05:06.461Z | 260.497° W | 38.121° | 2025-09-18 19:10:06.461Z | 351.254° N |
| 8 mins | 2025-09-19 05:32:06.461Z | 19.758° NNE | 2025-09-19 05:36:06.461Z | 88.19° E | 31.472° | 2025-09-19 05:40:06.461Z | 147.04° SSE |
| 6 mins | 2025-09-19 07:14:06.461Z | 312.428° NW | 2025-09-19 07:16:06.461Z | 282.274° WNW | 21.273° | 2025-09-19 07:20:06.461Z | 229.313° WSW |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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