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 26316.16623245 -.00000007 00000-0 -95375-5 0 9991
2 43576 86.3982 354.8745 0002127 96.4155 263.7283 14.34217441434587Epoch: 2026-11-12T03:59Z
TLE epoch observation values (Epoch: 2026-11-12T03:59:22.483Z)
Latitude
-0.00004°
Longitude
-116.27281°
Altitude
780.886 km
Speed
7.463 km/s
True Right ascension
23h 39m 29s
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
12:19:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.154 km
Perigee altitude
773.111 km
Semi-major axis
7,152.77 km
Eccentricity
0.00021
Inclination
86.3982°
RAAN
354.8745°
Arg. of periapsis
96.4155°
True anomaly
263.70407°
Mean anomaly
263.7283°
Eccentric anomaly
263.71619°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
-0.0000095375
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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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-11-12 16:19:03.768Z | 309.184° NW | 2026-11-12 16:21:03.768Z | 284.877° WNW | 15.018° | 2026-11-12 16:24:03.768Z | 248.94° W |
| 9 mins | 2026-11-13 03:33:03.768Z | 195.307° SSW | 2026-11-13 03:37:03.768Z | 274.404° WNW | 63.938° | 2026-11-13 03:42:03.768Z | 355.747° N |
| 8 mins | 2026-11-13 14:04:03.768Z | 25.834° NE | 2026-11-13 14:07:03.768Z | 70.516° E | 31.401° | 2026-11-13 14:12:03.768Z | 143.072° SSE |
| 7 mins | 2026-11-13 15:45:03.768Z | 323.566° NNW | 2026-11-13 15:48:03.768Z | 277.475° WNW | 27.474° | 2026-11-13 15:52:03.768Z | 222.673° SW |
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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