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, 4.7 m
Radar Cross Section
14.423 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 23 hours ago
TLE from 23 hours ago
0 IRIDIUM 138
1 43071U 17083B 25260.03318376 .00000105 00000-0 30512-4 0 9991
2 43071 86.3895 75.8592 0001904 102.6635 257.4773 14.34217227404982Epoch: 2025-09-17T00:47Z
TLE epoch observation values (Epoch: 2025-09-17T00:47:47.076Z)
Latitude
-0.00012°
Longitude
67.6981°
Altitude
781.015 km
Speed
7.463 km/s
True Right ascension
05h 03m 26s
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
16:07:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
775.995 km
Perigee altitude
773.272 km
Semi-major axis
7,152.771 km
Eccentricity
0.00019
Inclination
86.3895°
RAAN
75.8592°
Arg. of periapsis
102.6635°
True anomaly
257.456°
Mean anomaly
257.4773°
Eccentric anomaly
257.46665°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000030512
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-09-18 00:49:13.691Z | 332.028° NNW | 2025-09-18 00:53:13.691Z | 276.53° WNW | 25.463° | 2025-09-18 00:57:13.691Z | 221.202° SW |
| 8 mins | 2025-09-18 12:05:13.691Z | 166.785° S | 2025-09-18 12:08:13.691Z | 121.831° SE | 41.541° | 2025-09-18 12:13:13.691Z | 9.426° NNE |
| 4 mins | 2025-09-18 22:37:13.691Z | 53.845° ENE | 2025-09-18 22:39:13.691Z | 81.277° E | 16.119° | 2025-09-18 22:41:13.691Z | 106.65° ESE |
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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