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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
43925 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
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: 8 hours ago
TLE from 8 hours ago
0 IRIDIUM 173
1 43925U 19002D 26078.95276390 .00000108 00000-0 31578-4 0 9996
2 43925 86.3992 30.8431 0002066 85.3369 274.8063 14.34216749376163Epoch: 2026-03-19T22:51Z
TLE epoch observation values (Epoch: 2026-03-19T22:51:58.800Z)
Latitude
-0.00003°
Longitude
-129.6467°
Altitude
780.598 km
Speed
7.464 km/s
True Right ascension
02h 03m 22s
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
12:06:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.113 km
Perigee altitude
773.157 km
Semi-major axis
7,152.772 km
Eccentricity
0.00021
Inclination
86.3992°
RAAN
30.8431°
Arg. of periapsis
85.3369°
True anomaly
274.78271°
Mean anomaly
274.8063°
Eccentric anomaly
274.7945°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000031578
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #2 in the year 2019 (2019-01-11 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-03-20 07:49:32.048Z | 32.896° NE | 2026-03-20 07:52:32.048Z | 71.596° E | 19.736° | 2026-03-20 07:56:32.048Z | 124.328° SE |
| 8 mins | 2026-03-20 09:30:32.048Z | 334.097° NNW | 2026-03-20 09:33:32.048Z | 281.05° WNW | 33.433° | 2026-03-20 09:38:32.048Z | 205.072° SW |
| 8 mins | 2026-03-20 20:45:32.048Z | 151.761° SSE | 2026-03-20 20:49:32.048Z | 75.545° E | 34.662° | 2026-03-20 20:53:32.048Z | 18.088° NNE |
| 6 mins | 2026-03-20 22:27:32.048Z | 247.334° WSW | 2026-03-20 22:30:32.048Z | 289.483° WNW | 18.664° | 2026-03-20 22:33:32.048Z | 326.881° 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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|