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: 8 hours ago
TLE from 8 hours ago
0 IRIDIUM 138
1 43071U 17083B 26085.22216725 .00000207 00000-0 66897-4 0 9991
2 43071 86.4037 356.3758 0001946 76.8642 283.2771 14.34217129432244Epoch: 2026-03-26T05:19Z
TLE epoch observation values (Epoch: 2026-03-26T05:19:55.250Z)
Latitude
-0°
Longitude
92.72137°
Altitude
780.401 km
Speed
7.464 km/s
True Right ascension
23h 45m 30s
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
19:03:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.026 km
Perigee altitude
773.242 km
Semi-major axis
7,152.771 km
Eccentricity
0.00019
Inclination
86.4037°
RAAN
356.3758°
Arg. of periapsis
76.8642°
True anomaly
283.2554°
Mean anomaly
283.2771°
Eccentric anomaly
283.26625°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000066897
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-03-26 17:12:53.058Z | 100.028° ESE | 2026-03-26 17:14:53.058Z | 75.894° E | 13.133° | 2026-03-26 17:16:53.058Z | 52.309° ENE |
| 9 mins | 2026-03-26 18:50:53.058Z | 194.469° SSW | 2026-03-26 18:54:53.058Z | 278.425° WNW | 42.287° | 2026-03-26 18:59:53.058Z | 356.35° N |
| 7 mins | 2026-03-27 05:21:53.058Z | 27.176° NE | 2026-03-27 05:24:53.058Z | 72.925° E | 27.074° | 2026-03-27 05:28:53.058Z | 136.392° SSE |
| 7 mins | 2026-03-27 07:02:53.058Z | 323.13° NNW | 2026-03-27 07:05:53.058Z | 275.439° WNW | 25.163° | 2026-03-27 07:09:53.058Z | 221.286° SW |
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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