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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.

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<iframe src="https://www.satcat.com/sats-embedded/43925?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/43925?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

43925, 2019-002D

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

NGIS SSG Gilbert

Mission

Operational Commercial Communications

Bus & Motor

ELITEBUS, Unknown motor

Mass

860 kg wet, 700 kg dry

Launch date (UTC)

2019-01-11 (7 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: 12 hours ago

TLE from 12 hours ago

0 IRIDIUM 173
1 43925U 19002D   26033.39392255  .00000042  00000-0  80698-5 0  9999
2 43925  86.3923  49.8993 0002343  88.9342 271.2123 14.34217190369631

Epoch: 2026-02-02T09:27Z

TLE epoch observation values (Epoch: 2026-02-02T09:27:14.908Z)

Latitude

0.00006°

Longitude

135.49734°

Altitude

780.685 km

Speed

7.464 km/s

True Right ascension

03h 19m 35s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

23:13:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

776.309 km

Perigee altitude

772.958 km

Semi-major axis

7,152.771 km

Eccentricity

0.00023

Inclination

86.3923°

RAAN

49.8993°

Arg. of periapsis

88.9342°

True anomaly

271.18546°

Mean anomaly

271.2123°

Eccentric anomaly

271.19888°

Mean motion

3.58783 °/min

Orbital period

100.34 mins

BSTAR

0.0000080698

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Other satellites on launch #2 in the year 2019 (2019-01-11 UTC)

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IRIDIUM 173 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.
8 mins	2026-02-03 00:38:52.600Z	135.311° SSE	2026-02-03 00:42:52.600Z	79.783° E	23.899°	2026-02-03 00:46:52.600Z	28.069° NE
8 mins	2026-02-03 02:19:52.600Z	223.58° SW	2026-02-03 02:22:52.600Z	269.657° W	28.28°	2026-02-03 02:27:52.600Z	342.745° N
8 mins	2026-02-03 12:49:52.600Z	8.472° NNE	2026-02-03 12:53:52.600Z	97.084° ESE	41.134°	2026-02-03 12:57:52.600Z	163.816° S

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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 173, 43925 on other resources

View IRIDIUM 173, 43925 on NASA - NSSDCA Website

View IRIDIUM 173, 43925 on Heavens-Above

View IRIDIUM 173, 43925 on Keep Track

View IRIDIUM 173, 43925 on Celestrak

View IRIDIUM 173, 43925 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 173, 43925

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-02-02T09:27:14.908Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #2 in the year 2019 (2019-01-11 UTC)

IRIDIUM 173 Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 173, 43925 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago