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: 15 hours ago
TLE from 15 hours ago
0 IRIDIUM 138
1 43071U 17083B 25318.70850502 .00000172 00000-0 54288-4 0 9991
2 43071 86.3998 51.3219 0002235 86.3597 273.7854 14.34220163413393Epoch: 2025-11-14T17:00Z
TLE epoch observation values (Epoch: 2025-11-14T17:00:14.833Z)
Latitude
-0.00008°
Longitude
102.21197°
Altitude
780.605 km
Speed
7.464 km/s
True Right ascension
03h 25m 17s
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
05:06:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.222 km
Perigee altitude
773.025 km
Semi-major axis
7,152.761 km
Eccentricity
0.00022
Inclination
86.3998°
RAAN
51.3219°
Arg. of periapsis
86.3597°
True anomaly
273.75984°
Mean anomaly
273.7854°
Eccentric anomaly
273.77262°
Mean motion
3.58784 °/min
Orbital period
100.34 mins
BSTAR
0.000054288
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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 | 2025-11-15 17:02:39.337Z | 45.31° ENE | 2025-11-15 17:04:39.337Z | 68.555° E | 13.275° | 2025-11-15 17:06:39.337Z | 93.358° ESE |
| 8 mins | 2025-11-15 18:42:39.337Z | 347.997° N | 2025-11-15 18:46:39.337Z | 244.841° WSW | 41.667° | 2025-11-15 18:50:39.337Z | 191.342° SSW |
| 7 mins | 2025-11-16 05:58:39.337Z | 132.099° SE | 2025-11-16 06:01:39.337Z | 85.553° E | 25.745° | 2025-11-16 06:05:39.337Z | 28.366° NE |
| 7 mins | 2025-11-16 07:39:39.337Z | 233.335° WSW | 2025-11-16 07:42:39.337Z | 285.896° WNW | 26.499° | 2025-11-16 07:46:39.337Z | 339.358° N |
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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