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: 9 hours ago
TLE from 9 hours ago
0 IRIDIUM 156
1 43576U 18061H 25351.30067671 .00000249 00000-0 81709-4 0 9991
2 43576 86.3976 132.7832 0002136 99.3300 260.8137 14.34216082387307Epoch: 2025-12-17T07:12Z
TLE epoch observation values (Epoch: 2025-12-17T07:12:58.467Z)
Latitude
-0.00008°
Longitude
-61.63293°
Altitude
780.968 km
Speed
7.463 km/s
True Right ascension
08h 51m 07s
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
14:59:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.165 km
Perigee altitude
773.109 km
Semi-major axis
7,152.774 km
Eccentricity
0.00021
Inclination
86.3976°
RAAN
132.7832°
Arg. of periapsis
99.33°
True anomaly
260.78954°
Mean anomaly
260.8137°
Eccentric anomaly
260.80162°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000081709
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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 | 2025-12-17 21:11:34.501Z | 17.028° NNE | 2025-12-17 21:15:34.501Z | 82.459° E | 32.948° | 2025-12-17 21:19:34.501Z | 147.93° SSE |
| 6 mins | 2025-12-17 22:53:34.501Z | 313.806° NW | 2025-12-17 22:55:34.501Z | 285.544° WNW | 20.055° | 2025-12-17 22:59:34.501Z | 232.449° WSW |
| 9 mins | 2025-12-18 10:07:34.501Z | 180.055° SSW | 2025-12-18 10:11:34.501Z | 89.415° E | 44.984° | 2025-12-18 10:16:34.501Z | 2.993° NNE |
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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