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: 9 hours ago
TLE from 9 hours ago
0 IRIDIUM 138
1 43071U 17083B 26192.73545363 .00000130 00000-0 39227-4 0 9991
2 43071 86.3997 311.4527 0002070 91.5923 268.5510 14.34217766447654Epoch: 2026-07-11T17:39Z
TLE epoch observation values (Epoch: 2026-07-11T17:39:03.193Z)
Latitude
-0.00002°
Longitude
117.04499°
Altitude
780.756 km
Speed
7.463 km/s
True Right ascension
20h 45m 48s
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
14:52:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.112 km
Perigee altitude
773.151 km
Semi-major axis
7,152.769 km
Eccentricity
0.00021
Inclination
86.3997°
RAAN
311.4527°
Arg. of periapsis
91.5923°
True anomaly
268.52729°
Mean anomaly
268.551°
Eccentric anomaly
268.53914°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000039227
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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 | 2026-07-12 07:12:03.898Z | 105.557° ESE | 2026-07-12 07:14:03.898Z | 81.401° E | 14.181° | 2026-07-12 07:16:03.898Z | 56.184° ENE |
| 8 mins | 2026-07-12 08:51:03.898Z | 199.988° SSW | 2026-07-12 08:54:03.898Z | 253.641° W | 40.482° | 2026-07-12 08:59:03.898Z | 353.787° N |
| 7 mins | 2026-07-12 19:22:03.898Z | 30.893° NE | 2026-07-12 19:25:03.898Z | 86.183° E | 28.783° | 2026-07-12 19:29:03.898Z | 142.762° SSE |
| 6 mins | 2026-07-12 21:03:03.898Z | 315.29° NNW | 2026-07-12 21:05:03.898Z | 283.616° WNW | 23.522° | 2026-07-12 21:09:03.898Z | 226.44° WSW |
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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