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: 8 hours ago
TLE from 8 hours ago
0 IRIDIUM 156
1 43576U 18061H 26256.58391353 .00000132 00000-0 40225-4 0 9992
2 43576 86.4002 19.7566 0002164 90.0276 270.1167 14.34216661426042Epoch: 2026-09-13T14:00Z
TLE epoch observation values (Epoch: 2026-09-13T14:00:50.128Z)
Latitude
-0.00007°
Longitude
176.97125°
Altitude
780.719 km
Speed
7.463 km/s
True Right ascension
01h 19m 01s
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
14:21:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.183 km
Perigee altitude
773.087 km
Semi-major axis
7,152.772 km
Eccentricity
0.00022
Inclination
86.4002°
RAAN
19.7566°
Arg. of periapsis
90.0276°
True anomaly
270.0919°
Mean anomaly
270.1167°
Eccentric anomaly
270.1043°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000040225
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-09-14 08:32:19.667Z | 165.567° S | 2026-09-14 08:37:19.667Z | 75.125° E | 57.553° | 2026-09-14 08:41:19.667Z | 12.848° NNE |
| 4 mins | 2026-09-14 10:16:19.667Z | 261.389° W | 2026-09-14 10:18:19.667Z | 287.054° WNW | 15.508° | 2026-09-14 10:20:19.667Z | 312.112° NW |
| 4 mins | 2026-09-14 19:05:19.667Z | 51.593° ENE | 2026-09-14 19:07:19.667Z | 76.944° E | 14.992° | 2026-09-14 19:09:19.667Z | 101.528° ESE |
| 9 mins | 2026-09-14 20:44:19.667Z | 346.999° N | 2026-09-14 20:48:19.667Z | 268.757° W | 60.28° | 2026-09-14 20:53:19.667Z | 192.663° SSW |
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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