IRIDIUM 137, 43076
Orbit data source: Space-Track
IRIDIUM 137, 43076 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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43076 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: 9 hours ago
TLE from 9 hours ago
0 IRIDIUM 137
1 43076U 17083G 25321.32165689 .00000313 00000-0 10455-3 0 9997
2 43076 86.3990 50.7027 0002399 106.7995 253.3464 14.34212987413802Epoch: 2025-11-17T07:43Z
TLE epoch observation values (Epoch: 2025-11-17T07:43:11.155Z)
Latitude
-0.00003°
Longitude
-121.71755°
Altitude
781.226 km
Speed
7.463 km/s
True Right ascension
03h 22m 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
13:40:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.363 km
Perigee altitude
772.931 km
Semi-major axis
7,152.784 km
Eccentricity
0.00024
Inclination
86.399°
RAAN
50.7027°
Arg. of periapsis
106.7995°
True anomaly
253.32006°
Mean anomaly
253.3464°
Eccentric anomaly
253.33323°
Mean motion
3.58782 °/min
Orbital period
100.34 mins
BSTAR
0.00010455
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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 137 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-11-17 18:20:21.775Z | 356.216° N | 2025-11-17 18:25:21.775Z | 201.88° SSW | 44.331° | 2025-11-17 18:29:21.775Z | 181.355° SSW |
| 6 mins | 2025-11-18 05:38:21.775Z | 115.063° SE | 2025-11-18 05:40:21.775Z | 85.348° E | 20.816° | 2025-11-18 05:44:21.775Z | 32.988° NE |
| 8 mins | 2025-11-18 07:17:21.775Z | 215.579° SW | 2025-11-18 07:21:21.775Z | 287.422° WNW | 31.891° | 2025-11-18 07:25:21.775Z | 344.162° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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