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: 18 hours ago
TLE from 18 hours ago
0 IRIDIUM 138
1 43071U 17083B 25332.59244766 .00000312 00000-0 10429-3 0 9997
2 43071 86.3996 45.5224 0001987 85.0676 275.0747 14.34221481415380Epoch: 2025-11-28T14:13Z
TLE epoch observation values (Epoch: 2025-11-28T14:13:07.477Z)
Latitude
-0°
Longitude
124.50845°
Altitude
780.58 km
Speed
7.464 km/s
True Right ascension
03h 02m 05s
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
05:49:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.04 km
Perigee altitude
773.198 km
Semi-major axis
7,152.756 km
Eccentricity
0.0002
Inclination
86.3996°
RAAN
45.5224°
Arg. of periapsis
85.0676°
True anomaly
275.05202°
Mean anomaly
275.0747°
Eccentric anomaly
275.06336°
Mean motion
3.58784 °/min
Orbital period
100.34 mins
BSTAR
0.00010429
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Other satellites on launch #83 in the year 2017 (2017-12-23 UTC)
Did you know?
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 | 2025-11-29 15:55:35.643Z | 37.978° NE | 2025-11-29 15:58:35.643Z | 76.016° E | 17.04° | 2025-11-29 16:01:35.643Z | 114.001° SE |
| 7 mins | 2025-11-29 17:36:35.643Z | 337.199° NNW | 2025-11-29 17:39:35.643Z | 272.704° WNW | 37.4° | 2025-11-29 17:43:35.643Z | 202.263° SSW |
| 8 mins | 2025-11-30 04:51:35.643Z | 143.702° SSE | 2025-11-30 04:54:35.643Z | 97.129° ESE | 30.675° | 2025-11-30 04:59:35.643Z | 20.284° NNE |
| 6 mins | 2025-11-30 06:33:35.643Z | 246.749° WSW | 2025-11-30 06:35:35.643Z | 277.49° WNW | 21.733° | 2025-11-30 06:39:35.643Z | 331.925° NNW |
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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