IRIDIUM 128, 42811
Orbit data source: Space-Track
IRIDIUM 128, 42811 is a payload satellite owned by Iridium (US) in LEO that was launched on Sun, 25 Jun 2017 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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42811 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
OATK 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: 1 day ago
TLE from 1 day ago
0 IRIDIUM 128
1 42811U 17039J 25314.48484739 .00000217 00000-0 70513-4 0 9998
2 42811 86.3941 116.6048 0001698 99.3972 260.7416 14.34219603438631Epoch: 2025-11-10T11:38Z
TLE epoch observation values (Epoch: 2025-11-10T11:38:10.814Z)
Latitude
-0.00001°
Longitude
-107.82534°
Altitude
780.908 km
Speed
7.463 km/s
True Right ascension
07h 46m 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
08:59:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
775.84 km
Perigee altitude
773.411 km
Semi-major axis
7,152.763 km
Eccentricity
0.00017
Inclination
86.3941°
RAAN
116.6048°
Arg. of periapsis
99.3972°
True anomaly
260.7224°
Mean anomaly
260.7416°
Eccentric anomaly
260.732°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000070513
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Other satellites on launch #39 in the year 2017 (2017-06-25 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 128 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-11-11 12:54:37.909Z | 256.77° W | 2025-11-11 12:56:37.909Z | 280.888° WNW | 14.282° | 2025-11-11 12:59:37.909Z | 317.339° NNW |
| 4 mins | 2025-11-11 21:44:37.909Z | 58.185° ENE | 2025-11-11 21:45:37.909Z | 71.31° E | 14.945° | 2025-11-11 21:48:37.909Z | 108.16° ESE |
| 8 mins | 2025-11-11 23:23:37.909Z | 343.585° N | 2025-11-11 23:26:37.909Z | 290.538° WNW | 39.731° | 2025-11-11 23:31:37.909Z | 194.959° SSW |
| 7 mins | 2025-11-12 10:39:37.909Z | 133.347° SE | 2025-11-12 10:42:37.909Z | 80.3° E | 28.074° | 2025-11-12 10:46:37.909Z | 24.727° NE |
| 6 mins | 2025-11-12 12:20:37.909Z | 239.24° WSW | 2025-11-12 12:23:37.909Z | 289.906° WNW | 24.082° | 2025-11-12 12:26:37.909Z | 331.532° NNW |
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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