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: 11 hours ago
TLE from 11 hours ago
0 IRIDIUM 156
1 43576U 18061H 26136.23322336 .00000085 00000-0 23294-4 0 9990
2 43576 86.3962 70.0874 0002377 81.3523 278.7942 14.34217718408793Epoch: 2026-05-16T05:35Z
TLE epoch observation values (Epoch: 2026-05-16T05:35:50.498Z)
Latitude
-0.00002°
Longitude
112.17386°
Altitude
780.458 km
Speed
7.464 km/s
True Right ascension
04h 40m 20s
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
01:19:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.332 km
Perigee altitude
772.932 km
Semi-major axis
7,152.769 km
Eccentricity
0.00024
Inclination
86.3962°
RAAN
70.0874°
Arg. of periapsis
81.3523°
True anomaly
278.76728°
Mean anomaly
278.7942°
Eccentric anomaly
278.78074°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000023294
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-05-16 19:07:00.906Z | 130.943° SE | 2026-05-16 19:11:00.906Z | 79.624° E | 20.896° | 2026-05-16 19:14:00.906Z | 38.528° NE |
| 8 mins | 2026-05-16 20:48:00.906Z | 218.173° SW | 2026-05-16 20:51:00.906Z | 268.619° W | 31.846° | 2026-05-16 20:56:00.906Z | 345.832° N |
| 8 mins | 2026-05-17 07:18:00.906Z | 13.015° NNE | 2026-05-17 07:22:00.906Z | 94.481° ESE | 37.874° | 2026-05-17 07:26:00.906Z | 157.724° S |
| 5 mins | 2026-05-17 09:00:00.906Z | 307.181° NW | 2026-05-17 09:02:00.906Z | 280.573° WNW | 16.419° | 2026-05-17 09:05:00.906Z | 243.584° WSW |
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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