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, 4.8 m
Radar Cross Section
10.154 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 IRIDIUM 173
1 43925U 19002D 25302.95058942 .00000330 00000-0 11065-3 0 9991
2 43925 86.3928 89.8192 0002156 87.3914 272.7528 14.34217821355957Epoch: 2025-10-29T22:48Z
TLE epoch observation values (Epoch: 2025-10-29T22:48:50.925Z)
Latitude
-0.00011°
Longitude
69.09063°
Altitude
780.644 km
Speed
7.464 km/s
True Right ascension
05h 59m 16s
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
04:50:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.174 km
Perigee altitude
773.089 km
Semi-major axis
7,152.768 km
Eccentricity
0.00022
Inclination
86.3928°
RAAN
89.8192°
Arg. of periapsis
87.3914°
True anomaly
272.72812°
Mean anomaly
272.7528°
Eccentric anomaly
272.74046°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.00011065
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-10-30 10:38:12.281Z | 187.101° SSW | 2025-10-30 10:43:12.281Z | 265.329° W | 44.076° | 2025-10-30 10:48:12.281Z | 358.875° N |
| 6 mins | 2025-10-30 21:11:12.281Z | 39.076° NE | 2025-10-30 21:13:12.281Z | 71.179° E | 24.306° | 2025-10-30 21:17:12.281Z | 131.368° SE |
| 7 mins | 2025-10-30 22:51:12.281Z | 327.282° NNW | 2025-10-30 22:54:12.281Z | 278.305° WNW | 27.92° | 2025-10-30 22:58:12.281Z | 218.184° SW |
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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