IRIDIUM 138, 43071
Orbit data source: Space-Track
IRIDIUM 138, 43071 is a payload satellite owned by Iridium (US) in LEO that was launched on Sat, 23 Dec 2017 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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43071 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
OATK 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 138
1 43071U 17083B 26038.26795065 .00000251 00000-0 82428-4 0 9999
2 43071 86.3985 15.9761 0002596 90.6062 269.5431 14.34219829425510Epoch: 2026-02-07T06:25Z
TLE epoch observation values (Epoch: 2026-02-07T06:25:50.936Z)
Latitude
-0.00003°
Longitude
142.11995°
Altitude
780.727 km
Speed
7.463 km/s
True Right ascension
01h 03m 54s
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
16:21:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.482 km
Perigee altitude
772.768 km
Semi-major axis
7,152.762 km
Eccentricity
0.00026
Inclination
86.3985°
RAAN
15.9761°
Arg. of periapsis
90.6062°
True anomaly
269.51335°
Mean anomaly
269.5431°
Eccentric anomaly
269.52823°
Mean motion
3.58784 °/min
Orbital period
100.34 mins
BSTAR
0.000082428
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Other satellites on launch #83 in the year 2017 (2017-12-23 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 138 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 | 2026-02-07 21:39:24.016Z | 104.943° ESE | 2026-02-07 21:41:24.016Z | 80.444° E | 14.367° | 2026-02-07 21:43:24.016Z | 55.228° ENE |
| 8 mins | 2026-02-07 23:18:24.016Z | 200.897° SSW | 2026-02-07 23:21:24.016Z | 258.022° W | 40.442° | 2026-02-07 23:26:24.016Z | 353.741° N |
| 7 mins | 2026-02-08 09:49:24.016Z | 31.418° NE | 2026-02-08 09:52:24.016Z | 88.128° E | 28.967° | 2026-02-08 09:56:24.016Z | 143.604° SSE |
| 6 mins | 2026-02-08 11:30:24.016Z | 314.114° NW | 2026-02-08 11:32:24.016Z | 282.096° WNW | 23.349° | 2026-02-08 11:36:24.016Z | 226.165° 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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