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: 14 hours ago
TLE from 14 hours ago
0 IRIDIUM 138
1 43071U 17083B 25311.73165794 .00000074 00000-0 19186-4 0 9998
2 43071 86.3991 54.2359 0002343 87.7911 272.3553 14.34218007412392Epoch: 2025-11-07T17:33Z
TLE epoch observation values (Epoch: 2025-11-07T17:33:35.246Z)
Latitude
-0°
Longitude
103.66763°
Altitude
780.649 km
Speed
7.464 km/s
True Right ascension
03h 36m 56s
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
03:50:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.307 km
Perigee altitude
772.955 km
Semi-major axis
7,152.768 km
Eccentricity
0.00023
Inclination
86.3991°
RAAN
54.2359°
Arg. of periapsis
87.7911°
True anomaly
272.32847°
Mean anomaly
272.3553°
Eccentric anomaly
272.34189°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000019186
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-11-08 08:45:58.870Z | 240.406° WSW | 2025-11-08 08:48:58.870Z | 276.724° WNW | 17.78° | 2025-11-08 08:52:58.870Z | 327.574° NNW |
| 8 mins | 2025-11-08 19:15:58.870Z | 351.796° N | 2025-11-08 19:19:58.870Z | 232.448° WSW | 43.354° | 2025-11-08 19:23:58.870Z | 186.552° SSW |
| 7 mins | 2025-11-09 06:31:58.870Z | 128.687° SE | 2025-11-09 06:34:58.870Z | 85.457° E | 23.273° | 2025-11-09 06:38:58.870Z | 30.676° NE |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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