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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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<iframe src="https://www.satcat.com/sats-embedded/42811?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/42811?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

42811, 2017-039J

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

OATK SSG Gilbert

Mission

Operational Commercial Communications

Bus & Motor

ELITEBUS, Unknown motor

Mass

860 kg wet, 700 kg dry

Launch date (UTC)

2017-06-25 (9 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Trap Box + 2 Pan, 4.8 m

Radar Cross Section

10.154 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 4 hours ago

TLE from 4 hours ago

0 IRIDIUM 128
1 42811U 17039J   26035.50943885  .00000326  00000-0  10945-3 0  9997
2 42811  86.3923  80.6366 0002018  89.5359 270.6068 14.34216050450967

Epoch: 2026-02-04T12:13Z

TLE epoch observation values (Epoch: 2026-02-04T12:13:35.516Z)

Latitude

-0.00004°

Longitude

122.56362°

Altitude

780.709 km

Speed

7.463 km/s

True Right ascension

05h 22m 32s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

18:32:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.081 km

Perigee altitude

773.194 km

Semi-major axis

7,152.774 km

Eccentricity

0.0002

Inclination

86.3923°

RAAN

80.6366°

Arg. of periapsis

89.5359°

True anomaly

270.58368°

Mean anomaly

270.6068°

Eccentric anomaly

270.59524°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.00010945

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Other satellites on launch #39 in the year 2017 (2017-06-25 UTC)

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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	2026-02-05 03:24:31.056Z	177.727° S	2026-02-05 03:28:31.056Z	153.511° SSE	44.056°	2026-02-05 03:33:31.056Z	4.352° NNE
6 mins	2026-02-05 13:56:31.056Z	39.905° NE	2026-02-05 13:59:31.056Z	83.063° E	19.653°	2026-02-05 14:02:31.056Z	121.663° SE
8 mins	2026-02-05 15:36:31.056Z	336.312° NNW	2026-02-05 15:40:31.056Z	259.439° W	33.134°	2026-02-05 15:44:31.056Z	206.171° SW

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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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Check out IRIDIUM 128, 42811 on other resources

View IRIDIUM 128, 42811 on NASA - NSSDCA Website

View IRIDIUM 128, 42811 on Heavens-Above

View IRIDIUM 128, 42811 on Keep Track

View IRIDIUM 128, 42811 on Celestrak

View IRIDIUM 128, 42811 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

IRIDIUM 128, 42811

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 4 hours ago

TLE from 4 hours ago

TLE epoch observation values (Epoch: 2026-02-04T12:13:35.516Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 2017 (2017-06-25 UTC)

IRIDIUM 128 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 128, 42811 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 4 hours ago