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: 9 hours ago
TLE from 9 hours ago
0 IRIDIUM 138
1 43071U 17083B 25299.03378804 .00000162 00000-0 50789-4 0 9996
2 43071 86.3977 59.5413 0002487 92.3858 267.7623 14.34217803410573Epoch: 2025-10-26T00:48Z
TLE epoch observation values (Epoch: 2025-10-26T00:48:39.286Z)
Latitude
0.00001°
Longitude
12.72182°
Altitude
780.788 km
Speed
7.463 km/s
True Right ascension
03h 58m 09s
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
04:57:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.41 km
Perigee altitude
772.853 km
Semi-major axis
7,152.768 km
Eccentricity
0.00025
Inclination
86.3977°
RAAN
59.5413°
Arg. of periapsis
92.3858°
True anomaly
267.73382°
Mean anomaly
267.7623°
Eccentric anomaly
267.74806°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000050789
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-10-26 19:47:49.285Z | 10.677° NNE | 2025-10-26 19:52:49.285Z | 88.021° E | 35.366° | 2025-10-26 19:56:49.285Z | 152.721° SSE |
| 5 mins | 2025-10-26 21:30:49.285Z | 310.281° NW | 2025-10-26 21:32:49.285Z | 282.627° WNW | 18.31° | 2025-10-26 21:35:49.285Z | 242.46° WSW |
| 10 mins | 2025-10-27 08:43:49.285Z | 184.098° SSW | 2025-10-27 08:48:49.285Z | 308.854° NW | 44.654° | 2025-10-27 08:53:49.285Z | 0.873° NNE |
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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