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 26304.09627825 .00000156 00000-0 48607-4 0 9996
2 43576 86.4000 359.9180 0002152 97.0898 263.0543 14.34218034432856Epoch: 2026-10-31T02:18Z
TLE epoch observation values (Epoch: 2026-10-31T02:18:38.440Z)
Latitude
0°
Longitude
-74.14908°
Altitude
780.904 km
Speed
7.463 km/s
True Right ascension
23h 59m 40s
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
05:43:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.17 km
Perigee altitude
773.091 km
Semi-major axis
7,152.768 km
Eccentricity
0.00022
Inclination
86.4°
RAAN
359.918°
Arg. of periapsis
97.0898°
True anomaly
263.02982°
Mean anomaly
263.0543°
Eccentric anomaly
263.04206°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000048607
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-10-31 14:38:32.305Z | 53.316° ENE | 2026-10-31 14:40:32.305Z | 77.821° E | 13.603° | 2026-10-31 14:42:32.305Z | 101.156° ESE |
| 9 mins | 2026-10-31 16:17:32.305Z | 349.13° N | 2026-10-31 16:21:32.305Z | 262.239° W | 66.034° | 2026-10-31 16:26:32.305Z | 189.557° SSW |
| 7 mins | 2026-11-01 03:33:32.305Z | 133.708° SE | 2026-11-01 03:36:32.305Z | 90.146° ESE | 28.424° | 2026-11-01 03:40:32.305Z | 30.244° NE |
| 7 mins | 2026-11-01 05:14:32.305Z | 230.652° WSW | 2026-11-01 05:17:32.305Z | 281.035° WNW | 30.562° | 2026-11-01 05:21:32.305Z | 338.037° N |
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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