IRIDIUM 173, 43925
Orbit data source: Space-Track
IRIDIUM 173, 43925 is a payload satellite owned by Iridium (US) in LEO that was launched on Fri, 11 Jan 2019 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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43925 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NGIS 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: 11 hours ago
TLE from 11 hours ago
0 IRIDIUM 173
1 43925U 19002D 25256.97313515 .00000106 00000-0 30960-4 0 9998
2 43925 86.3932 109.0622 0002144 92.0396 268.1046 14.34217341349368Epoch: 2025-09-13T23:21Z
TLE epoch observation values (Epoch: 2025-09-13T23:21:18.876Z)
Latitude
0.00001°
Longitude
125.53474°
Altitude
780.77 km
Speed
7.463 km/s
True Right ascension
07h 16m 14s
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
02:55:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.167 km
Perigee altitude
773.1 km
Semi-major axis
7,152.77 km
Eccentricity
0.00021
Inclination
86.3932°
RAAN
109.0622°
Arg. of periapsis
92.0396°
True anomaly
268.08005°
Mean anomaly
268.1046°
Eccentric anomaly
268.09232°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.00003096
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Other satellites on launch #2 in the year 2019 (2019-01-11 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 173 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 | 2025-09-14 14:31:52.893Z | 168.659° S | 2025-09-14 14:36:52.893Z | 73.211° E | 41.674° | 2025-09-14 14:40:52.893Z | 10.843° NNE |
| 5 mins | 2025-09-15 01:04:52.893Z | 50.933° ENE | 2025-09-15 01:06:52.893Z | 77.391° E | 15.686° | 2025-09-15 01:09:52.893Z | 113.26° SE |
| 8 mins | 2025-09-15 02:43:52.893Z | 344.639° N | 2025-09-15 02:47:52.893Z | 268.034° W | 39.222° | 2025-09-15 02:51:52.893Z | 198.524° SSW |
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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