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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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: 11 hours ago
TLE from 11 hours ago
0 IRIDIUM 138
1 43071U 17083B 26304.85346181 .00000058 00000-0 13706-4 0 9999
2 43071 86.3945 264.5697 0002116 84.3050 275.8387 14.34217674463722Epoch: 2026-10-31T20:28Z
TLE epoch observation values (Epoch: 2026-10-31T20:28:59.100Z)
Latitude
-0.00002°
Longitude
-82.82978°
Altitude
780.565 km
Speed
7.464 km/s
True Right ascension
17h 38m 16s
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
03:10:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.145 km
Perigee altitude
773.118 km
Semi-major axis
7,152.769 km
Eccentricity
0.00021
Inclination
86.3945°
RAAN
264.5697°
Arg. of periapsis
84.305°
True anomaly
275.81458°
Mean anomaly
275.8387°
Eccentric anomaly
275.82664°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000013706
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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 | 2026-11-01 08:46:38.620Z | 20.953° NNE | 2026-11-01 08:50:38.620Z | 72.331° E | 28.502° | 2026-11-01 08:54:38.620Z | 133.498° SE |
| 7 mins | 2026-11-01 10:28:38.620Z | 325.353° NNW | 2026-11-01 10:31:38.620Z | 276.549° WNW | 30.487° | 2026-11-01 10:35:38.620Z | 219.34° SW |
| 8 mins | 2026-11-01 21:43:38.620Z | 163.655° S | 2026-11-01 21:46:38.620Z | 114.637° SE | 59.243° | 2026-11-01 21:51:38.620Z | 10.773° NNE |
| 4 mins | 2026-11-01 23:26:38.620Z | 265.497° W | 2026-11-01 23:28:38.620Z | 290.874° WNW | 14.53° | 2026-11-01 23:30:38.620Z | 314.654° NW |
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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