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: 14 hours ago
TLE from 14 hours ago
0 IRIDIUM 173
1 43925U 19002D 26303.25855162 .00000100 00000-0 28665-4 0 9995
2 43925 86.3920 297.1065 0002205 90.0729 270.0720 14.34217997408310Epoch: 2026-10-30T06:12Z
TLE epoch observation values (Epoch: 2026-10-30T06:12:18.859Z)
Latitude
0°
Longitude
165.44672°
Altitude
780.716 km
Speed
7.463 km/s
True Right ascension
19h 48m 25s
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
16:06:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.208 km
Perigee altitude
773.054 km
Semi-major axis
7,152.768 km
Eccentricity
0.00022
Inclination
86.392°
RAAN
297.1065°
Arg. of periapsis
90.0729°
True anomaly
270.04673°
Mean anomaly
270.072°
Eccentric anomaly
270.05937°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000028665
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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 | 2026-10-30 23:05:21.111Z | 117.371° SE | 2026-10-30 23:08:21.111Z | 80.171° E | 17.707° | 2026-10-30 23:11:21.111Z | 42.577° NE |
| 8 mins | 2026-10-31 00:45:21.111Z | 208.297° SW | 2026-10-31 00:48:21.111Z | 264.008° W | 49.55° | 2026-10-31 00:53:21.111Z | 350.45° N |
| 8 mins | 2026-10-31 11:15:21.111Z | 18.71° NNE | 2026-10-31 11:19:21.111Z | 88.839° E | 39.823° | 2026-10-31 11:23:21.111Z | 148.71° SSE |
| 6 mins | 2026-10-31 12:57:21.111Z | 311.453° NW | 2026-10-31 12:59:21.111Z | 281.978° WNW | 21.96° | 2026-10-31 13:03:21.111Z | 230.474° WSW |
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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