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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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 156
1 43576U 18061H 26123.88419567 .00000065 00000-0 16224-4 0 9993
2 43576 86.3950 75.2506 0002416 84.6130 275.5341 14.34217981407028Epoch: 2026-05-03T21:13Z
TLE epoch observation values (Epoch: 2026-05-03T21:13:14.505Z)
Latitude
-0.00009°
Longitude
-104.84119°
Altitude
780.551 km
Speed
7.464 km/s
True Right ascension
05h 01m 00s
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
16:50:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.359 km
Perigee altitude
772.903 km
Semi-major axis
7,152.768 km
Eccentricity
0.00024
Inclination
86.395°
RAAN
75.2506°
Arg. of periapsis
84.613°
True anomaly
275.50654°
Mean anomaly
275.5341°
Eccentric anomaly
275.52032°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000016224
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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 | 2026-05-04 09:31:19.199Z | 339.165° N | 2026-05-04 09:35:19.199Z | 279.047° WNW | 32.705° | 2026-05-04 09:39:19.199Z | 210.913° SW |
| 8 mins | 2026-05-04 20:47:19.199Z | 152.758° SSE | 2026-05-04 20:51:19.199Z | 73.054° E | 35.296° | 2026-05-04 20:55:19.199Z | 17.112° NNE |
| 6 mins | 2026-05-04 22:29:19.199Z | 248.636° W | 2026-05-04 22:32:19.199Z | 290.207° WNW | 18.068° | 2026-05-04 22:35:19.199Z | 326.858° NNW |
| 4 mins | 2026-05-05 08:58:19.199Z | 352.504° N | 2026-05-05 09:02:19.199Z | 239.694° WSW | 43.836° | 2026-05-05 09:02:19.199Z | 239.694° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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