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, 4.7 m
Radar Cross Section
14.423 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 IRIDIUM 137
1 43076U 17083G 25259.99512905 .00000058 00000-0 13703-4 0 9993
2 43076 86.3910 76.3490 0002187 72.7577 287.3858 14.34217745405010Epoch: 2025-09-16T23:52Z
TLE epoch observation values (Epoch: 2025-09-16T23:52:59.149Z)
Latitude
-0.00005°
Longitude
81.92511°
Altitude
780.251 km
Speed
7.464 km/s
True Right ascension
05h 05m 23s
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
14:51:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.196 km
Perigee altitude
773.067 km
Semi-major axis
7,152.769 km
Eccentricity
0.00022
Inclination
86.391°
RAAN
76.349°
Arg. of periapsis
72.7577°
True anomaly
287.36188°
Mean anomaly
287.3858°
Eccentric anomaly
287.37384°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000013703
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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 | 2025-09-17 23:53:47.932Z | 359.825° N | 2025-09-17 23:58:47.932Z | 133.217° SE | 44.345° | 2025-09-18 00:02:47.932Z | 174.749° S |
| 5 mins | 2025-09-18 11:11:47.932Z | 112.66° SE | 2025-09-18 11:13:47.932Z | 86.035° E | 17.895° | 2025-09-18 11:16:47.932Z | 45.268° ENE |
| 8 mins | 2025-09-18 12:50:47.932Z | 208.94° SW | 2025-09-18 12:54:47.932Z | 287.265° WNW | 35.577° | 2025-09-18 12:58:47.932Z | 347.292° 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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