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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

Last TLE update

5 hours ago

Origin

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 (8 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, 9.4 m

Radar Cross Section

14.423 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 5 hours ago

0 IRIDIUM 128
1 42811U 17039J   25182.20373468 -.00000022  00000-0 -14867-4 0  9993
2 42811  86.3999 171.8428 0001929  80.4879 279.6535 14.34217157419679

Epoch: 2025-07-01T04:53Z

TLE epoch observation values (Epoch: 2025-07-01T04:53:22.676Z)

Latitude

0.00001°

Longitude

178.99576°

Altitude

780.489 km

Speed

7.464 km/s

True Right ascension

11h 27m 22s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

77.27754°

Longitude

-17.19253°

Altitude

789.567 km

Speed

7.466 km/s

Apparent Right ascension

09h 51m 46s

Apparent Declination

41° 04' 53"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

22:01:42

Azimuth

1.896° NNE

Elevation

-8.971°

Doppler factor

Orbital elements

Apogee altitude

776.013 km

Perigee altitude

773.254 km

Semi-major axis

7,152.771 km

Eccentricity

0.00019

Inclination

86.3999°

RAAN

171.8428°

Arg. of periapsis

80.4879°

True anomaly

Unknown

Mean anomaly

279.6535°

Eccentric anomaly

Unknown

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

-0.000014867

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

IRIDIUM 128 Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-01 10:30:16.527Z	34.076° NE	2025-07-01 10:33:16.527Z	75.905° E	21.232°	2025-07-01 10:37:16.527Z	128.429° SE
7 mins	2025-07-01 12:11:16.527Z	329.685° NNW	2025-07-01 12:14:16.527Z	272.829° WNW	31.777°	2025-07-01 12:18:16.527Z	211.181° SW
8 mins	2025-07-01 23:26:16.527Z	153.233° SSE	2025-07-01 23:29:16.527Z	101.531° ESE	36.29°	2025-07-01 23:34:16.527Z	15.353° NNE
5 mins	2025-07-02 01:08:16.527Z	251.83° W	2025-07-02 01:10:16.527Z	278.337° WNW	17.411°	2025-07-02 01:13:16.527Z	318.648° NNW

Authenticating...

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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.