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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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: 13 hours ago
TLE from 13 hours ago
0 IRIDIUM 128
1 42811U 17039J 26307.81595661 .00000097 00000-0 27562-4 0 9997
2 42811 86.3955 326.8074 0002282 94.6772 265.4684 14.34218338489994Epoch: 2026-11-03T19:34Z
TLE epoch observation values (Epoch: 2026-11-03T19:34:58.651Z)
Latitude
-0.00005°
Longitude
-10.01018°
Altitude
780.846 km
Speed
7.463 km/s
True Right ascension
21h 47m 13s
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
04:17:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.262 km
Perigee altitude
772.997 km
Semi-major axis
7,152.767 km
Eccentricity
0.00023
Inclination
86.3955°
RAAN
326.8074°
Arg. of periapsis
94.6772°
True anomaly
265.44233°
Mean anomaly
265.4684°
Eccentric anomaly
265.45537°
Mean motion
3.58783 °/min
Orbital period
100.34 mins
BSTAR
0.000027562
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-11-04 12:53:41.631Z | 14.658° NNE | 2026-11-04 12:58:41.631Z | 86.887° E | 36.396° | 2026-11-04 13:02:41.631Z | 145.468° SSE |
| 6 mins | 2026-11-04 14:36:41.631Z | 313.559° NW | 2026-11-04 14:38:41.631Z | 283.071° WNW | 23.92° | 2026-11-04 14:42:41.631Z | 228.613° WSW |
| 9 mins | 2026-11-05 01:50:41.631Z | 175.472° S | 2026-11-05 01:54:41.631Z | 56.199° ENE | 77.695° | 2026-11-05 01:59:41.631Z | 4.942° NNE |
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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