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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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: 2 days ago
TLE from 2 days ago
0 IRIDIUM 173
1 43925U 19002D 26170.97744161 .00000181 00000-0 57398-4 0 9996
2 43925 86.3969 352.3968 0002180 87.6004 272.5441 14.34217706389356Epoch: 2026-06-19T23:27Z
TLE epoch observation values (Epoch: 2026-06-19T23:27:30.955Z)
Latitude
-0.00004°
Longitude
92.31914°
Altitude
780.649 km
Speed
7.464 km/s
True Right ascension
23h 29m 35s
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
01:38:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.191 km
Perigee altitude
773.072 km
Semi-major axis
7,152.769 km
Eccentricity
0.00022
Inclination
86.3969°
RAAN
352.3968°
Arg. of periapsis
87.6004°
True anomaly
272.51914°
Mean anomaly
272.5441°
Eccentric anomaly
272.53162°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000057398
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-21 22:56:13.635Z | 39.694° NE | 2026-06-21 22:59:13.635Z | 78.545° E | 16.99° | 2026-06-21 23:02:13.635Z | 115.595° SE |
| 8 mins | 2026-06-22 00:36:13.635Z | 342.122° N | 2026-06-22 00:40:13.635Z | 265.735° W | 37.343° | 2026-06-22 00:44:13.635Z | 201.459° SSW |
| 7 mins | 2026-06-22 11:52:13.635Z | 142.33° SSE | 2026-06-22 11:55:13.635Z | 92.651° ESE | 30.885° | 2026-06-22 11:59:13.635Z | 24.986° NE |
| 7 mins | 2026-06-22 13:33:13.635Z | 237.611° WSW | 2026-06-22 13:36:13.635Z | 280.484° WNW | 21.822° | 2026-06-22 13:40:13.635Z | 333.283° NNW |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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