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: 13 hours ago
TLE from 13 hours ago
0 IRIDIUM 138
1 43071U 17083B 25293.87091444 .00000359 00000-0 12130-3 0 9999
2 43071 86.3973 61.6990 0002483 94.6398 265.5082 14.34217954409832Epoch: 2025-10-20T20:54Z
TLE epoch observation values (Epoch: 2025-10-20T20:54:07.007Z)
Latitude
0.00002°
Longitude
78.60279°
Altitude
780.857 km
Speed
7.463 km/s
True Right ascension
04h 06m 47s
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
04:29:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.407 km
Perigee altitude
772.855 km
Semi-major axis
7,152.768 km
Eccentricity
0.00025
Inclination
86.3973°
RAAN
61.699°
Arg. of periapsis
94.6398°
True anomaly
265.47983°
Mean anomaly
265.5082°
Eccentric anomaly
265.49402°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.0001213
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-10-21 10:26:13.868Z | 241.799° WSW | 2025-10-21 10:29:13.868Z | 279.52° WNW | 18.105° | 2025-10-21 10:32:13.868Z | 320.133° NNW |
| 8 mins | 2025-10-21 20:56:13.868Z | 351.833° N | 2025-10-21 20:59:13.868Z | 314.531° NW | 43.205° | 2025-10-21 21:04:13.868Z | 185.83° SSW |
| 7 mins | 2025-10-22 08:12:13.868Z | 126.572° SE | 2025-10-22 08:15:13.868Z | 81.917° E | 23.061° | 2025-10-22 08:19:13.868Z | 29.56° NE |
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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