IRIDIUM 158, 43571
Orbit data source: Space-Track
IRIDIUM 158, 43571 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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43571 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: 2 days ago
TLE from 2 days ago
0 IRIDIUM 158
1 43571U 18061C 26171.40289899 .00000061 00000-0 14606-4 0 9990
2 43571 86.3959 55.4133 0002195 83.0622 277.0823 14.34217742413823Epoch: 2026-06-20T09:40Z
TLE epoch observation values (Epoch: 2026-06-20T09:40:10.472Z)
Latitude
-0.00008°
Longitude
1.75163°
Altitude
780.525 km
Speed
7.464 km/s
True Right ascension
03h 41m 39s
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
21:35:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.202 km
Perigee altitude
773.062 km
Semi-major axis
7,152.769 km
Eccentricity
0.00022
Inclination
86.3959°
RAAN
55.4133°
Arg. of periapsis
83.0622°
True anomaly
277.05734°
Mean anomaly
277.0823°
Eccentric anomaly
277.06982°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000014606
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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 158 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 15:24:14.064Z | 107.715° ESE | 2026-06-22 15:26:14.064Z | 83.515° E | 14.664° | 2026-06-22 15:29:14.064Z | 46.765° ENE |
| 8 mins | 2026-06-22 17:03:14.064Z | 200.951° SSW | 2026-06-22 17:07:14.064Z | 298.591° NW | 39.504° | 2026-06-22 17:11:14.064Z | 352.502° N |
| 7 mins | 2026-06-23 03:34:14.064Z | 28.381° NE | 2026-06-23 03:37:14.064Z | 82.556° E | 29.687° | 2026-06-23 03:41:14.064Z | 143.005° SSE |
| 6 mins | 2026-06-23 05:15:14.064Z | 316.33° NNW | 2026-06-23 05:17:14.064Z | 286.227° WNW | 22.672° | 2026-06-23 05:21:14.064Z | 228.675° WSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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